diff --git a/src/osgPlugins/3ds/readwrite.cpp b/src/osgPlugins/3ds/readwrite.cpp
index cf03edbd5..e2b236522 100644
--- a/src/osgPlugins/3ds/readwrite.cpp
+++ b/src/osgPlugins/3ds/readwrite.cpp
@@ -54,7 +54,8 @@ lib3ds_byte_read(FILE *f)
   Lib3dsByte b;
 
   ASSERT(f);
-  fread(&b,1,1,f);
+  int result = fread(&b,1,1,f);
+  if (result==0) return 0;
   return(b);
 }
 
@@ -73,7 +74,9 @@ lib3ds_word_read(FILE *f)
   Lib3dsWord w;
 
   ASSERT(f);
-  fread(b,2,1,f);
+  int result = fread(b,2,1,f);
+  if (result==0) return 0;
+
   w=((Lib3dsWord)b[1] << 8) |
     ((Lib3dsWord)b[0]);
   return(w);
@@ -96,7 +99,9 @@ lib3ds_dword_read(FILE *f)
   Lib3dsDword d;        
                          
   ASSERT(f);
-  fread(b,4,1,f);
+  int result = fread(b,4,1,f);
+  if (result==0) return 0;
+
   d=((Lib3dsDword)b[3] << 24) |
     ((Lib3dsDword)b[2] << 16) |
     ((Lib3dsDword)b[1] << 8) |
@@ -120,7 +125,9 @@ lib3ds_intb_read(FILE *f)
   Lib3dsIntb b;
 
   ASSERT(f);
-  fread(&b,1,1,f);
+  int result = fread(&b,1,1,f);
+  if (result==0) return 0;
+
   return(b);
 }
 
@@ -140,7 +147,8 @@ lib3ds_intw_read(FILE *f)
   Lib3dsByte b[2];
 
   ASSERT(f);
-  fread(b,2,1,f);
+  int result = fread(b,2,1,f);
+  if (result==0) return 0;
 
   if (s_requiresByteSwap)
   {
@@ -166,7 +174,8 @@ lib3ds_intd_read(FILE *f)
   Lib3dsByte b[4];
                          
   ASSERT(f);
-  fread(b,4,1,f);
+  int result = fread(b,4,1,f);
+  if (result==0) return 0;
 
   if (s_requiresByteSwap)
   {
@@ -192,7 +201,8 @@ lib3ds_float_read(FILE *f)
   Lib3dsByte b[4];
 
   ASSERT(f);
-  fread(b,4,1,f);
+  int result = fread(b,4,1,f);
+  if (result==0) return 0;
 
   if (s_requiresByteSwap)
   {
@@ -434,18 +444,30 @@ lib3ds_intd_write(Lib3dsIntd d, FILE *f)
  *
  * \return   True on success, False otherwise.
  */
+ 
+ 
 Lib3dsBool
 lib3ds_float_write(Lib3dsFloat l, FILE *f)
 {
-  Lib3dsByte b[4];
-  Lib3dsDword d;
 
-  ASSERT(f);
-  d=*((Lib3dsDword*)&l);
-  b[3]=(Lib3dsByte)(((Lib3dsDword)d & 0xFF000000) >> 24);
-  b[2]=(Lib3dsByte)(((Lib3dsDword)d & 0x00FF0000) >> 16);
-  b[1]=(Lib3dsByte)(((Lib3dsDword)d & 0x0000FF00) >> 8);
-  b[0]=(Lib3dsByte)(((Lib3dsDword)d & 0x000000FF));
+  Lib3dsByte b[4];
+  Lib3dsByte* ptr = (Lib3dsByte*) (&l);
+
+  if (s_requiresByteSwap)
+  {
+      b[3] = *ptr++;
+      b[2] = *ptr++;
+      b[1] = *ptr++;
+      b[0] = *ptr++;
+  }
+  else
+  {
+      b[0] = *ptr++;
+      b[1] = *ptr++;
+      b[2] = *ptr++;
+      b[3] = *ptr++;
+  }
+  
   if (fwrite(b,4,1,f)!=1) {
     return(LIB3DS_FALSE);
   }
diff --git a/src/osgPlugins/3ds/viewport.cpp b/src/osgPlugins/3ds/viewport.cpp
index 3cdc461fd..4dfd87d9d 100644
--- a/src/osgPlugins/3ds/viewport.cpp
+++ b/src/osgPlugins/3ds/viewport.cpp
@@ -83,7 +83,10 @@ lib3ds_viewport_read(Lib3dsViewport *viewport, FILE *f)
                 lib3ds_vector_read(viewport->layout.viewL[cur].center,f);
                 viewport->layout.viewL[cur].horiz_angle=lib3ds_float_read(f);
                 viewport->layout.viewL[cur].vert_angle=lib3ds_float_read(f);
-                fread(viewport->layout.viewL[cur].camera,11,1,f);
+
+                int result = fread(viewport->layout.viewL[cur].camera,11,1,f);
+                if (result==0) return (LIB3DS_FALSE);
+
                 ++cur;
               }
               break;
@@ -157,7 +160,8 @@ lib3ds_viewport_read(Lib3dsViewport *viewport, FILE *f)
             case LIB3DS_VIEW_CAMERA:
               {
                 viewport->default_view.type=LIB3DS_VIEW_TYPE_CAMERA;
-                fread(viewport->default_view.camera,11,1,f);
+                int result = fread(viewport->default_view.camera,11,1,f);
+                if (result==0) return (LIB3DS_FALSE);
               }
               break;
             default:
@@ -249,7 +253,8 @@ lib3ds_viewport_write(Lib3dsViewport *viewport, FILE *f)
       lib3ds_vector_write(viewport->layout.viewL[i].center,f);
       lib3ds_float_write(viewport->layout.viewL[i].horiz_angle,f);
       lib3ds_float_write(viewport->layout.viewL[i].vert_angle,f);
-      fwrite(viewport->layout.viewL[i].camera,11,1,f);
+      int result = fwrite(viewport->layout.viewL[i].camera,11,1,f);
+      if (result==0) return (LIB3DS_FALSE);
     }
 
     if (!lib3ds_chunk_write_end(&c,f)) {
@@ -345,7 +350,8 @@ lib3ds_viewport_write(Lib3dsViewport *viewport, FILE *f)
           c.chunk=LIB3DS_VIEW_CAMERA;
           c.size=17;
           lib3ds_chunk_write(&c,f);
-          fwrite(viewport->default_view.camera,1,11,f);
+          int result = fwrite(viewport->default_view.camera,1,11,f);
+          if (result==0) return (LIB3DS_FALSE);
         }
         break;
     }
diff --git a/src/osgPlugins/ac/ac3d.cpp b/src/osgPlugins/ac/ac3d.cpp
index 2b8c940b3..985db6548 100644
--- a/src/osgPlugins/ac/ac3d.cpp
+++ b/src/osgPlugins/ac/ac3d.cpp
@@ -1168,7 +1168,8 @@ readObject(std::istream& stream, FileData& fileData, const osg::Matrix& parentTr
             std::string texname = readString(stream);
 
             // strip absolute paths
-            if (texname[0] == '/' || isalpha(texname[0]) && texname[1] == ':') {
+            if (texname[0] == '/' || 
+                (isalpha(texname[0]) && texname[1] == ':')) {
                 std::string::size_type p = texname.rfind('\\');
                 if (p != std::string::npos)
                     texname = texname.substr(p+1, std::string::npos);
diff --git a/src/osgPlugins/bsp/VBSPGeometry.cpp b/src/osgPlugins/bsp/VBSPGeometry.cpp
index a715dba35..d9647e37d 100644
--- a/src/osgPlugins/bsp/VBSPGeometry.cpp
+++ b/src/osgPlugins/bsp/VBSPGeometry.cpp
@@ -249,17 +249,17 @@ void VBSPGeometry::createDispSurface(Face & face, DisplaceInfo & dispInfo)
     Vec3              texV;
     float             texVOffset;
     float             texVScale;
-    unsigned int      i, j, k;
+    int               i, j, k;
     double            dist, minDist;
-    int               minIndex;
+    int               minIndex = 0;
     osg::Vec3         temp;
     int               edgeIndex;
     int               currentSurfEdge;
     Edge              currentEdge;
     osg::Vec3         currentVertex;
     osg::Vec3         vertices[4];
-    unsigned int      firstVertex;
-    unsigned int      numEdgeVertices;
+    int               firstVertex;
+    int               numEdgeVertices;
     double            subdivideScale;
     osg::Vec3         leftEdge, rightEdge;
     osg::Vec3         leftEdgeStep, rightEdgeStep;
diff --git a/src/osgPlugins/bsp/VBSPReader.cpp b/src/osgPlugins/bsp/VBSPReader.cpp
index c1e4b6c37..c77765238 100644
--- a/src/osgPlugins/bsp/VBSPReader.cpp
+++ b/src/osgPlugins/bsp/VBSPReader.cpp
@@ -355,11 +355,11 @@ void VBSPReader::processDispVerts(std::istream & str, int offset, int length)
 std::string VBSPReader::getToken(std::string str, const char * delim,
                                  std::string::size_type & index)
 {
-    std::string::size_type start, end;
     std::string   token;
 
     // Look for the first non-occurrence of the delimiters
-    start = str.find_first_not_of(" \t\n\r\"", index);
+    std::string::size_type start = str.find_first_not_of(" \t\n\r\"", index);
+    std::string::size_type end = std::string::npos;
     if (start != std::string::npos)
     {
         // From there, look for the first occurrence of a delimiter
@@ -627,7 +627,6 @@ ref_ptr<StateSet> VBSPReader::readMaterialFile(std::string materialName)
     bool                    found = false;
     ref_ptr<StateSet>       stateSet;
     std::string             shaderName;
-    osg::Image *            texImage = 0;
     std::string             texName;
     std::string             tex2Name;
     ref_ptr<Texture>        texture;
diff --git a/src/osgPlugins/curl/ReaderWriterCURL.cpp b/src/osgPlugins/curl/ReaderWriterCURL.cpp
index ba10e1688..806c4cac2 100644
--- a/src/osgPlugins/curl/ReaderWriterCURL.cpp
+++ b/src/osgPlugins/curl/ReaderWriterCURL.cpp
@@ -272,10 +272,12 @@ osgDB::ReaderWriter::ReadResult ReaderWriterCURL::readFile(ObjectType objectType
 
         //Setting Proxy by OSG Options
         if(!optProxy.empty())
+        {
             if(!optProxyPort.empty())
                 proxyAddress = optProxy + ":" + optProxyPort;
             else
                 proxyAddress = optProxy + ":8080"; //Port not found, using default
+        }
     }
 
     std::string fileName;
diff --git a/src/osgPlugins/dxf/dxfEntity.h b/src/osgPlugins/dxf/dxfEntity.h
index 18d26643b..c59bb1e35 100644
--- a/src/osgPlugins/dxf/dxfEntity.h
+++ b/src/osgPlugins/dxf/dxfEntity.h
@@ -258,13 +258,13 @@ public:
         _string(""),
         _point1(0,0,0),
         _point2(0,0,0),
+        _ocs(0,0,1),
         _height(1),
         _xscale(1),
         _rotation(0),
         _flags(0),
         _hjustify(0),
-        _vjustify(0),
-        _ocs(0,0,1) {}
+        _vjustify(0) {}
 
     virtual ~dxfText() {}
     virtual dxfBasicEntity*        create() { return new dxfText; }
diff --git a/src/osgPlugins/logo/ReaderWriterLOGO.cpp b/src/osgPlugins/logo/ReaderWriterLOGO.cpp
index 036f2fb2c..f81ffa974 100644
--- a/src/osgPlugins/logo/ReaderWriterLOGO.cpp
+++ b/src/osgPlugins/logo/ReaderWriterLOGO.cpp
@@ -171,7 +171,7 @@ class Logos: public osg::Drawable
         bool hasLogos()
         {
             int n = 0;
-            for( int i = Center; i <= last_position; i++ )
+            for( int i = Center; i < last_position; i++ )
                 n += logos[i].size();
             return (n != 0);
         }
diff --git a/src/osgPlugins/lwo/lwo2read.h b/src/osgPlugins/lwo/lwo2read.h
index 5c4a5bf35..a86c7d5c0 100644
--- a/src/osgPlugins/lwo/lwo2read.h
+++ b/src/osgPlugins/lwo/lwo2read.h
@@ -67,11 +67,23 @@ U4 read_U4(Iter &it)
     return u4;
 }
 
+template<typename D, typename S>
+D changeType4(S src)
+{
+    D dest;
+    char* dest_ptr = reinterpret_cast<char*>(&dest);
+    char* src_ptr = reinterpret_cast<char*>(&src);
+    for(int i=0; i<4; ++i)
+    {
+        *dest_ptr = *src_ptr;
+    }
+    return dest;
+}
+
 template<class Iter>
 F4 read_F4(Iter &it)
 {
-    U4 u4 = read_U4(it);
-    return *reinterpret_cast<F4 *>(&u4);
+    return changeType4<F4, U4>(read_U4(it));
 }
 
 template<class Iter>
diff --git a/src/osgPlugins/lwo/old_Lwo2.cpp b/src/osgPlugins/lwo/old_Lwo2.cpp
index 04173fc00..af1cfc8af 100644
--- a/src/osgPlugins/lwo/old_Lwo2.cpp
+++ b/src/osgPlugins/lwo/old_Lwo2.cpp
@@ -41,6 +41,7 @@
 
 #include "old_Lwo2.h"
 #include "old_Lwo2Layer.h"
+#include "lwo2read.h"
 
 Lwo2::Lwo2():
   _current_layer(0),
@@ -77,7 +78,7 @@ Lwo2::ReadFile( const string& filename )
 
     // checking EA-IFF85 format
     // http://www.lightwave3d.com/developer/75lwsdk/docs/filefmts/eaiff85.html
-    if (_read_long() != tag_FORM) 
+    if (_read_uint() != tag_FORM) 
     {
         notify(INFO) << "File '" << filename << "' is not IFF format file." << std::endl;
         _fin.close();
@@ -88,12 +89,12 @@ Lwo2::ReadFile( const string& filename )
         notify(INFO) << "Detected EA-IFF85 format" << std::endl;
     }
 
-    unsigned long form_size = _read_long();
+    unsigned int form_size = _read_uint();
     notify(INFO) << "Form size: " << form_size << std::endl;
 
     // checking LWO2 format 
     // http://www.lightwave3d.com/developer/75lwsdk/docs/filefmts/lwo2.html
-    if (_read_long() != tag_LWO2) 
+    if (_read_uint() != tag_LWO2) 
     {
         unsigned long make_id(const char*);
         notify(INFO) << "File '" << filename << "' is not LWO2 format file." << std::endl;
@@ -112,8 +113,8 @@ Lwo2::ReadFile( const string& filename )
     // main loop for reading tags
     while (read_bytes < form_size && !_fin.eof())
     {
-        current_tag_name = _read_long();
-        current_tag_size = _read_long();
+        current_tag_name = _read_uint();
+        current_tag_size = _read_uint();
         read_bytes += 8 + current_tag_size + current_tag_size % 2;
 
         _print_tag(current_tag_name, current_tag_size);
@@ -176,8 +177,8 @@ Lwo2::_read_char()
   return static_cast<unsigned char>(c);
 }
 
-unsigned long 
-Lwo2::_read_long()
+unsigned int 
+Lwo2::_read_uint()
 {
   return
     (_read_char() << 24) | 
@@ -197,8 +198,7 @@ Lwo2::_read_short()
 float 
 Lwo2::_read_float()
 {
-  unsigned long x = _read_long();
-  return *(float*)&x;
+  return lwo2::changeType4<float, unsigned int>(_read_uint());
 }
 
 // read null terminated string 
@@ -316,7 +316,7 @@ void Lwo2::_read_points(unsigned long size)
 
 void Lwo2::_read_vertex_mapping(unsigned long size) 
 {
-    unsigned int type = _read_long();
+    unsigned int type = _read_uint();
     size -= 4;
 
     _print_type(type);
@@ -364,7 +364,7 @@ void Lwo2::_read_vertex_mapping(unsigned long size)
 void 
 Lwo2::_read_polygons(unsigned long size) 
 {
-    unsigned int type = _read_long();
+    unsigned int type = _read_uint();
     size -= 4;
 
     _print_type(type);
@@ -408,7 +408,7 @@ Lwo2::_read_polygons(unsigned long size)
 
 void Lwo2::_read_polygon_tag_mapping(unsigned long size) 
 {
-    unsigned int type = _read_long();
+    unsigned int type = _read_uint();
     size -= 4;
 
     _print_type(type);
@@ -441,7 +441,7 @@ void Lwo2::_read_polygon_tag_mapping(unsigned long size)
 
 void Lwo2::_read_polygons_mapping(unsigned long size) 
 {
-    unsigned int type = _read_long();
+    unsigned int type = _read_uint();
     size -= 4;
 
     _print_type(type);
@@ -503,14 +503,14 @@ void Lwo2::_read_polygons_mapping(unsigned long size)
 void 
 Lwo2::_read_image_definition(unsigned long size)
 {
-    unsigned int index = _read_long();
+    unsigned int index = _read_uint();
     size -= 4;
     notify(DEBUG_INFO) << "  index  \t" << index << std::endl;
 
     unsigned int type;
     while (size > 0)
     {
-        type = _read_long();
+        type = _read_uint();
         size -= 4;
 
         _print_type(type);
@@ -557,7 +557,7 @@ void Lwo2::_read_surface(unsigned long size)
 
     while (size > 0 && !_fin.eof()) 
     {
-        current_tag_name = _read_long();
+        current_tag_name = _read_uint();
         size -= 4;
         current_tag_size = _read_short();
         size -= 2;
@@ -572,7 +572,7 @@ void Lwo2::_read_surface(unsigned long size)
             size -= blok_size;
             while (blok_size > 0) 
             {
-                current_tag_name = _read_long();
+                current_tag_name = _read_uint();
                 blok_size -= 4;
                 current_tag_size = _read_short();
                 blok_size -= 2;
@@ -599,7 +599,7 @@ void Lwo2::_read_surface(unsigned long size)
 
                     while(imap_size > 0)
                     {
-                        current_tag_name = _read_long();
+                        current_tag_name = _read_uint();
                         imap_size -= 4;
                         current_tag_size = _read_short();
                         imap_size -= 2;
diff --git a/src/osgPlugins/lwo/old_Lwo2.h b/src/osgPlugins/lwo/old_Lwo2.h
index abeaddba8..6baf991ac 100644
--- a/src/osgPlugins/lwo/old_Lwo2.h
+++ b/src/osgPlugins/lwo/old_Lwo2.h
@@ -69,7 +69,7 @@ class Lwo2
 
   unsigned char _read_char();
   unsigned short _read_short();
-  unsigned long _read_long();
+  unsigned int _read_uint();
   float _read_float();
   string& _read_string(string&);
 
diff --git a/src/osgPlugins/lwo/old_lw.cpp b/src/osgPlugins/lwo/old_lw.cpp
index 407c5a648..e65a2c111 100644
--- a/src/osgPlugins/lwo/old_lw.cpp
+++ b/src/osgPlugins/lwo/old_lw.cpp
@@ -17,6 +17,9 @@
  */
 
 #include "old_lw.h"
+
+#include "lwo2read.h"
+
 #include <stdio.h>
 #include <math.h>
 #include <stdlib.h>
@@ -80,10 +83,10 @@ static gint32 read_long(FILE *f)
   return (read_char(f)<<24) | (read_char(f)<<16) | (read_char(f)<<8) | read_char(f);
 }
 
+
 static GLfloat read_float(FILE *f)
 {
-  gint32 x = read_long(f);
-  return *(GLfloat*)&x;
+  return lwo2::changeType4<GLfloat, gint32>(read_long(f));
 }
 
 static gint read_string(FILE *f, char *s)
diff --git a/src/osgPlugins/md2/ReaderWriterMD2.cpp b/src/osgPlugins/md2/ReaderWriterMD2.cpp
index 4d818116a..7045a6883 100644
--- a/src/osgPlugins/md2/ReaderWriterMD2.cpp
+++ b/src/osgPlugins/md2/ReaderWriterMD2.cpp
@@ -173,7 +173,11 @@ load_md2 (const char *filename, const osgDB::ReaderWriter::Options* options)
     }
 #else
     mapbase = malloc (st.st_size);
-    read (file_fd, mapbase, st.st_size);
+    if (read(file_fd, mapbase, st.st_size)==0)
+    {
+        close (file_fd);
+        return NULL;
+    }
 #endif
 
     if (g_md2NormalsArray == NULL) {
diff --git a/src/osgPlugins/ogr/ReaderWriterOGR.cpp b/src/osgPlugins/ogr/ReaderWriterOGR.cpp
index 6821fd4dc..8e9b01a84 100644
--- a/src/osgPlugins/ogr/ReaderWriterOGR.cpp
+++ b/src/osgPlugins/ogr/ReaderWriterOGR.cpp
@@ -213,7 +213,6 @@ public:
     {
         osg::Geometry* geom = new osg::Geometry;
 
-        unsigned int total = 0;
         for (int i = 0; i < mpolygon->getNumGeometries(); i++ ) 
         {
             OGRGeometry* ogrGeom = mpolygon->getGeometryRef(i);
@@ -233,7 +232,6 @@ public:
 
                 if (!geom->getVertexArray()) 
                 { // no yet data we put the first in
-                    osg::Vec3Array* arraySrc = static_cast<osg::Vec3Array*>(geom->getVertexArray());
                     geom->setVertexArray(geometry->getVertexArray());
                     geom->setPrimitiveSetList(geometry->getPrimitiveSetList());
 
diff --git a/src/osgPlugins/osgShadow/ShadowMap.cpp b/src/osgPlugins/osgShadow/ShadowMap.cpp
index 246861373..56bca7f83 100644
--- a/src/osgPlugins/osgShadow/ShadowMap.cpp
+++ b/src/osgPlugins/osgShadow/ShadowMap.cpp
@@ -24,17 +24,17 @@ osgDB::RegisterDotOsgWrapperProxy ShadowMap_Proxy
     ShadowMap_writeLocalData
 );
 
-bool ShadowMap_readLocalData(osg::Object& obj, osgDB::Input &fr)
+bool ShadowMap_readLocalData(osg::Object& /*obj*/, osgDB::Input &/*fr*/)
 {
-    osgShadow::ShadowMap& ss = static_cast<osgShadow::ShadowMap&>(obj);
+    // osgShadow::ShadowMap& ss = static_cast<osgShadow::ShadowMap&>(obj);
     bool itAdvanced = false;
 
     return itAdvanced;
 }
 
-bool ShadowMap_writeLocalData(const osg::Object& obj, osgDB::Output& fw)
+bool ShadowMap_writeLocalData(const osg::Object& /*obj*/, osgDB::Output& /*fw*/)
 {
-    const osgShadow::ShadowMap& ss = static_cast<const osgShadow::ShadowMap &>(obj);
+    // const osgShadow::ShadowMap& ss = static_cast<const osgShadow::ShadowMap &>(obj);
 
     return true;
 }
diff --git a/src/osgPlugins/osgShadow/ShadowTechnique.cpp b/src/osgPlugins/osgShadow/ShadowTechnique.cpp
index a94530b46..121d7cf2a 100644
--- a/src/osgPlugins/osgShadow/ShadowTechnique.cpp
+++ b/src/osgPlugins/osgShadow/ShadowTechnique.cpp
@@ -24,17 +24,17 @@ osgDB::RegisterDotOsgWrapperProxy ShadowTechnique_Proxy
     ShadowTechnique_writeLocalData
 );
 
-bool ShadowTechnique_readLocalData(osg::Object& obj, osgDB::Input &fr)
+bool ShadowTechnique_readLocalData(osg::Object& /*obj*/, osgDB::Input& /*fr*/)
 {
-    osgShadow::ShadowTechnique& ss = static_cast<osgShadow::ShadowTechnique&>(obj);
+    //osgShadow::ShadowTechnique& ss = static_cast<osgShadow::ShadowTechnique&>(obj);
     bool itAdvanced = false;
 
     return itAdvanced;
 }
 
-bool ShadowTechnique_writeLocalData(const osg::Object& obj, osgDB::Output& fw)
+bool ShadowTechnique_writeLocalData(const osg::Object& /*obj*/, osgDB::Output& /*fw*/)
 {
-    const osgShadow::ShadowTechnique& ss = static_cast<const osgShadow::ShadowTechnique &>(obj);
+    //const osgShadow::ShadowTechnique& ss = static_cast<const osgShadow::ShadowTechnique &>(obj);
 
     return true;
 }
diff --git a/src/osgPlugins/osgShadow/ShadowTexture.cpp b/src/osgPlugins/osgShadow/ShadowTexture.cpp
index d6bc4773c..f00dcda14 100644
--- a/src/osgPlugins/osgShadow/ShadowTexture.cpp
+++ b/src/osgPlugins/osgShadow/ShadowTexture.cpp
@@ -24,17 +24,17 @@ osgDB::RegisterDotOsgWrapperProxy ShadowTexture_Proxy
     ShadowTexture_writeLocalData
 );
 
-bool ShadowTexture_readLocalData(osg::Object& obj, osgDB::Input &fr)
+bool ShadowTexture_readLocalData(osg::Object& /*obj*/, osgDB::Input& /*fr*/)
 {
-    osgShadow::ShadowTexture& ss = static_cast<osgShadow::ShadowTexture&>(obj);
+    // osgShadow::ShadowTexture& ss = static_cast<osgShadow::ShadowTexture&>(obj);
     bool itAdvanced = false;
 
     return itAdvanced;
 }
 
-bool ShadowTexture_writeLocalData(const osg::Object& obj, osgDB::Output& fw)
+bool ShadowTexture_writeLocalData(const osg::Object& /*obj*/, osgDB::Output& /*fw*/)
 {
-    const osgShadow::ShadowTexture& ss = static_cast<const osgShadow::ShadowTexture &>(obj);
+    // const osgShadow::ShadowTexture& ss = static_cast<const osgShadow::ShadowTexture &>(obj);
 
     return true;
 }
diff --git a/src/osgPlugins/osgShadow/ShadowVolume.cpp b/src/osgPlugins/osgShadow/ShadowVolume.cpp
index f9ff0de1d..33e2c1c8c 100644
--- a/src/osgPlugins/osgShadow/ShadowVolume.cpp
+++ b/src/osgPlugins/osgShadow/ShadowVolume.cpp
@@ -24,17 +24,17 @@ osgDB::RegisterDotOsgWrapperProxy ShadowVolume_Proxy
     ShadowVolume_writeLocalData
 );
 
-bool ShadowVolume_readLocalData(osg::Object& obj, osgDB::Input &fr)
+bool ShadowVolume_readLocalData(osg::Object& /*obj*/, osgDB::Input& /*fr*/)
 {
-    osgShadow::ShadowVolume& ss = static_cast<osgShadow::ShadowVolume&>(obj);
+    // osgShadow::ShadowVolume& ss = static_cast<osgShadow::ShadowVolume&>(obj);
     bool itAdvanced = false;
 
     return itAdvanced;
 }
 
-bool ShadowVolume_writeLocalData(const osg::Object& obj, osgDB::Output& fw)
+bool ShadowVolume_writeLocalData(const osg::Object& /*obj*/, osgDB::Output& /*fw*/)
 {
-    const osgShadow::ShadowVolume& ss = static_cast<const osgShadow::ShadowVolume &>(obj);
+    // const osgShadow::ShadowVolume& ss = static_cast<const osgShadow::ShadowVolume &>(obj);
 
     return true;
 }
diff --git a/src/osgPlugins/osgtgz/ReaderWriterOSGTGZ.cpp b/src/osgPlugins/osgtgz/ReaderWriterOSGTGZ.cpp
index 6b6da4748..795094662 100644
--- a/src/osgPlugins/osgtgz/ReaderWriterOSGTGZ.cpp
+++ b/src/osgPlugins/osgtgz/ReaderWriterOSGTGZ.cpp
@@ -73,9 +73,11 @@ class sgReaderWriterOSGTGZ : public osgDB::ReaderWriter
             mkdir( dirname, 0700 );
         #endif
 
-            system( command );
+            if ( system( command ) ) {
+                return ReadResult::FILE_NOT_HANDLED;
+            }
 
-            osg::Group *grp = new osg::Group;
+            osg::ref_ptr<osg::Group> grp = new osg::Group;
             
             osg::ref_ptr<osgDB::ReaderWriter::Options> local_options = options ? static_cast<osgDB::ReaderWriter::Options*>(options->clone(osg::CopyOp::SHALLOW_COPY)) : new osgDB::ReaderWriter::Options;
             local_options->getDatabasePathList().push_front(dirname);
@@ -97,12 +99,13 @@ class sgReaderWriterOSGTGZ : public osgDB::ReaderWriter
             // note, is this the right command for windows?
             // is there any way of overiding the Y/N option? RO.
             sprintf( command, "erase %s", dirname );
-            system( command );
         #else
 
             sprintf( command, "rm -rf %s", dirname );
-            system( command );
         #endif
+            if ( system( command ) ) {
+                return ReadResult::FILE_NOT_HANDLED;
+            }
 
             if( grp->getNumChildren() == 0 )
             {
@@ -110,7 +113,7 @@ class sgReaderWriterOSGTGZ : public osgDB::ReaderWriter
                 return ReadResult::FILE_NOT_HANDLED;
             }
 
-            return grp;
+            return grp.get();
 
         }
 
diff --git a/src/osgPlugins/pdf/ReaderWriterPDF.cpp b/src/osgPlugins/pdf/ReaderWriterPDF.cpp
index 66fbf6a73..dd6bb8812 100644
--- a/src/osgPlugins/pdf/ReaderWriterPDF.cpp
+++ b/src/osgPlugins/pdf/ReaderWriterPDF.cpp
@@ -31,9 +31,12 @@ class CairoImage : public osg::Referenced
             _context(0) {}
             
         
-        void create(unsigned int width, unsigned int height)
+        void create(int width, int height)
         {
-            if (_image->data() && width==_image->s() && height==_image->t()) return;
+            if (_image->data() && width==_image->s() && height==_image->t()) 
+            {
+                return;
+            }
 
             osg::notify(osg::NOTICE)<<"Create cario surface/context "<<width<<", "<<height<<std::endl;
 
@@ -208,7 +211,8 @@ class PopplerPdfImage : public osgWidget::PdfImage
             cairo_restore(_cairoImage->getContext());
 
             dirty();
-
+            
+            return true;
 	}
 
 
diff --git a/src/osgPlugins/shp/ESRIShape.cpp b/src/osgPlugins/shp/ESRIShape.cpp
index 06f203697..ade244ae4 100644
--- a/src/osgPlugins/shp/ESRIShape.cpp
+++ b/src/osgPlugins/shp/ESRIShape.cpp
@@ -692,7 +692,7 @@ PolygonM::~PolygonM()
     delete[] parts;
     delete[] points;
     delete[] mArray;
-};
+}
 
 
 bool PolygonM::read( int fd )
diff --git a/src/osgPlugins/tgz/ReaderWriterTGZ.cpp b/src/osgPlugins/tgz/ReaderWriterTGZ.cpp
index b4777011b..78b5ec469 100644
--- a/src/osgPlugins/tgz/ReaderWriterTGZ.cpp
+++ b/src/osgPlugins/tgz/ReaderWriterTGZ.cpp
@@ -84,9 +84,11 @@ class ReaderWriterTGZ : public osgDB::ReaderWriter
  
             osg::notify(osg::NOTICE)<<"Running command '"<<command<<"'"<<std::endl;
 
-            system( command );
+            int result = system( command );
+            if (result!=0) return ReadResult::ERROR_IN_READING_FILE;
+            
 
-            osg::Group *grp = new osg::Group;
+            osg::ref_ptr<osg::Group> grp = new osg::Group;
  
             osg::notify(osg::NOTICE)<<"Done"<<std::endl;
  
@@ -124,15 +126,16 @@ class ReaderWriterTGZ : public osgDB::ReaderWriter
             sprintf( command, "rm -rf %s", dirname );
         #endif
             osg::notify(osg::NOTICE)<<"Running command '"<<command<<"'"<<std::endl;
-            system( command );
+
+            result = system( command );
+            if (result!=0) return ReadResult::ERROR_IN_READING_FILE;
 
             if( grp->getNumChildren() == 0 )
             {
-                grp->unref();
                 return ReadResult::FILE_NOT_HANDLED;
             }
 
-            return grp;
+            return grp.get();
 
         }
 
diff --git a/src/osgPlugins/vnc/ReaderWriterVNC.cpp b/src/osgPlugins/vnc/ReaderWriterVNC.cpp
index 3df74f8f6..962058036 100644
--- a/src/osgPlugins/vnc/ReaderWriterVNC.cpp
+++ b/src/osgPlugins/vnc/ReaderWriterVNC.cpp
@@ -286,6 +286,7 @@ bool LibVncImage::sendPointerEvent(int x, int y, int buttonMask)
         SendPointerEvent(_client ,x, y, buttonMask);
         return true;
     }
+    return false;
 }
 
 bool LibVncImage::sendKeyEvent(int key, bool keyDown)
@@ -295,6 +296,7 @@ bool LibVncImage::sendKeyEvent(int key, bool keyDown)
         SendKeyEvent(_client, key, keyDown ? TRUE : FALSE);
         return true;
     }
+    return false;
 }
 
 
diff --git a/src/osgPlugins/xine/ReaderWriterXine.cpp b/src/osgPlugins/xine/ReaderWriterXine.cpp
index 39680e243..c28ee85a6 100644
--- a/src/osgPlugins/xine/ReaderWriterXine.cpp
+++ b/src/osgPlugins/xine/ReaderWriterXine.cpp
@@ -327,8 +327,8 @@ class ReaderWriterXine : public osgDB::ReaderWriter
             if(user_home)
             {
                 char* cfgfile = NULL;
-                asprintf(&(cfgfile), "%s/.xine/config", user_home);
-                xine_config_load(_xine, cfgfile);
+                int result = asprintf(&(cfgfile), "%s/.xine/config", user_home);                
+                if (result>0) xine_config_load(_xine, cfgfile);
             }
 
             xine_init(_xine);
diff --git a/src/osgPlugins/zip/ReaderWriterZIP.cpp b/src/osgPlugins/zip/ReaderWriterZIP.cpp
index d08d1c559..604e79175 100644
--- a/src/osgPlugins/zip/ReaderWriterZIP.cpp
+++ b/src/osgPlugins/zip/ReaderWriterZIP.cpp
@@ -71,11 +71,6 @@ class ReaderWriterZIP : public osgDB::ReaderWriter
                     fileName.c_str(), dirname);
             }
 
-            osg::notify(osg::NOTICE)<<"Running command '"<<command<<"'"<<std::endl;
-            if ( system( command ) ) {
-                return ReadResult::FILE_NOT_HANDLED;
-            }
-
         #else
             sprintf( dirname, "/tmp/.zip%06d", getpid());
             mkdir( dirname, 0700 );
@@ -84,10 +79,14 @@ class ReaderWriterZIP : public osgDB::ReaderWriter
                 "unzip %s -d %s",
                 fileName.c_str(), dirname);
 
-            system( command );
         #endif
 
-            osg::Group *grp = new osg::Group;
+            osg::notify(osg::INFO)<<"Running command '"<<command<<"'"<<std::endl;
+            if ( system( command ) ) {
+                return ReadResult::FILE_NOT_HANDLED;
+            }
+
+            osg::ref_ptr<osg::Group> grp = new osg::Group;
  
             osg::ref_ptr<osgDB::ReaderWriter::Options> local_options = options ? static_cast<osgDB::ReaderWriter::Options*>(options->clone(osg::CopyOp::SHALLOW_COPY)) : new osgDB::ReaderWriter::Options;
             local_options->getDatabasePathList().push_front(dirname);
@@ -117,20 +116,20 @@ class ReaderWriterZIP : public osgDB::ReaderWriter
             // note, is this the right command for windows?
             // is there any way of overiding the Y/N option? RO.
             sprintf( command, "erase /S /Q \"%s\"", dirname );
-            system( command );
+            int result = system( command );
         #else
 
             sprintf( command, "rm -rf %s", dirname );
-            system( command );
+            int result = system( command );
         #endif
+            if (result!=0) return ReadResult::ERROR_IN_READING_FILE;
 
             if( grp->getNumChildren() == 0 )
             {
-                grp->unref();
                 return ReadResult::FILE_NOT_HANDLED;
             }
 
-            return grp;
+            return grp.get();
         }
 
 };