diff --git a/include/OpenThreads/Exports b/include/OpenThreads/Exports
index 8a935ec73..9331f0ebe 100644
--- a/include/OpenThreads/Exports
+++ b/include/OpenThreads/Exports
@@ -39,10 +39,6 @@
     #endif
 #endif
 
-#ifndef OT_UNUSED
-    #define OT_UNUSED(var) (void) var
-#endif
-
 #endif
 
 
diff --git a/include/osg/Export b/include/osg/Export
index 86ff71c25..7fd42bfbd 100644
--- a/include/osg/Export
+++ b/include/osg/Export
@@ -60,12 +60,6 @@
     #endif
 #endif
 
-#ifndef OSG_UNUSED
-    #define OSG_UNUSED(var) (void) var
-#endif
-
-
-
 /**
 
 \namespace osg
diff --git a/src/OpenThreads/pthreads/PThread.cpp b/src/OpenThreads/pthreads/PThread.cpp
index 9821a18a0..60d1dde51 100644
--- a/src/OpenThreads/pthreads/PThread.cpp
+++ b/src/OpenThreads/pthreads/PThread.cpp
@@ -1,13 +1,13 @@
 /* -*-c++-*- OpenThreads library, Copyright (C) 2002 - 2007  The Open Thread Group
  *
- * This library is open source and may be redistributed and/or modified under
- * the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
+ * This library is open source and may be redistributed and/or modified under  
+ * the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or 
  * (at your option) any later version.  The full license is in LICENSE file
  * included with this distribution, and on the openscenegraph.org website.
- *
+ * 
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the 
  * OpenSceneGraph Public License for more details.
 */
 
@@ -238,8 +238,7 @@ private:
         }
 
         fflush(stdout);
-#else // ] ALLOW_PRIORITY_SCHEDULING
-        OT_UNUSED(thread);
+
 #endif // ] ALLOW_PRIORITY_SCHEDULING
 
     }
@@ -347,8 +346,6 @@ private:
 
         }
 
-#else // ] ALLOW_PRIORITY_SCHEDULING
-        OT_UNUSED(thread);
 #endif // ] ALLOW_PRIORITY_SCHEDULING
 
     return status;
@@ -369,7 +366,6 @@ int Thread::SetConcurrency(int concurrencyLevel)
 #if defined (HAVE_PTHREAD_SETCONCURRENCY)
     return pthread_setconcurrency(concurrencyLevel);
 #else
-    OT_UNUSED(concurrencyLevel);
     return -1;
 #endif
 
@@ -440,7 +436,7 @@ Thread::~Thread()
     }
 
     delete pd;
-
+    
     _prvData = 0;
 }
 
@@ -554,7 +550,7 @@ int Thread::setProcessorAffinity(unsigned int cpunum)
     PThreadPrivateData *pd = static_cast<PThreadPrivateData *> (_prvData);
     pd->cpunum = cpunum;
     if (pd->cpunum<0) return -1;
-
+    
 #ifdef __sgi
 
     int status;
@@ -696,7 +692,7 @@ int Thread::start() {
 //
 int Thread::startThread()
 {
-    if (_prvData) return start();
+    if (_prvData) return start(); 
     else return 0;
 }
 
@@ -843,7 +839,6 @@ int Thread::setSchedulePriority(ThreadPriority priority) {
         return 0;
 
 #else
-    OT_UNUSED(priority);
     return -1;
 #endif
 
@@ -883,7 +878,6 @@ int Thread::setSchedulePolicy(ThreadPolicy policy)
     else
     return 0;
 #else
-    OT_UNUSED(policy);
     return -1;
 #endif
 
@@ -1015,7 +1009,7 @@ int OpenThreads::GetNumberOfProcessors()
    uint64_t num_cpus = 0;
    size_t num_cpus_length = sizeof(num_cpus);
 #if defined(__FreeBSD__)
-   sysctlbyname("hw.ncpu", &num_cpus, &num_cpus_length, NULL, 0);
+   sysctlbyname("hw.ncpu", &num_cpus, &num_cpus_length, NULL, 0);            
 #else
    sysctlbyname("hw.activecpu", &num_cpus, &num_cpus_length, NULL, 0);
 #endif
@@ -1030,7 +1024,7 @@ int OpenThreads::SetProcessorAffinityOfCurrentThread(unsigned int cpunum)
     Thread::Init();
 
     Thread* thread = Thread::CurrentThread();
-    if (thread)
+    if (thread) 
     {
         return thread->setProcessorAffinity(cpunum);
     }
@@ -1052,6 +1046,6 @@ int OpenThreads::SetProcessorAffinityOfCurrentThread(unsigned int cpunum)
 #endif
 #endif
     }
-
+    
     return -1;
 }
diff --git a/src/osg/PrimitiveSet.cpp b/src/osg/PrimitiveSet.cpp
index 44f048f76..834d39d11 100644
--- a/src/osg/PrimitiveSet.cpp
+++ b/src/osg/PrimitiveSet.cpp
@@ -110,8 +110,6 @@ void DrawArrayLengths::draw(State& state, bool) const
         }
         if (mode==GL_POLYGON) mode = GL_TRIANGLE_FAN;
         if (mode==GL_QUAD_STRIP) mode = GL_TRIANGLE_STRIP;
-    #else
-    OSG_UNUSED(state);
     #endif
 
     GLint first = _first;
diff --git a/src/osg/Referenced.cpp b/src/osg/Referenced.cpp
index 042a80ca3..5c358b86e 100644
--- a/src/osg/Referenced.cpp
+++ b/src/osg/Referenced.cpp
@@ -110,8 +110,6 @@ void Referenced::setThreadSafeReferenceCounting(bool enableThreadSafeReferenceCo
 {
 #if !defined(_OSG_REFERENCED_USE_ATOMIC_OPERATIONS)
     s_useThreadSafeReferenceCounting = enableThreadSafeReferenceCounting;
-#else
-    OSG_UNUSED(enableThreadSafeReferenceCounting);
 #endif
 }
 
@@ -184,12 +182,8 @@ Referenced::Referenced(bool threadSafeRefUnref):
 #if !defined(_OSG_REFERENCED_USE_ATOMIC_OPERATIONS)
 #ifndef ENFORCE_THREADSAFE
     if (threadSafeRefUnref)
-#else
-    OSG_UNUSED(threadSafeRefUnref);
 #endif
         _refMutex = new OpenThreads::Mutex;
-#else
-    OSG_UNUSED(threadSafeRefUnref);
 #endif
 
 #ifdef DEBUG_OBJECT_ALLOCATION_DESTRUCTION
@@ -353,8 +347,6 @@ void Referenced::setThreadSafeRefUnref(bool threadSafe)
             delete tmpMutexPtr;
         }
     }
-#else
-    OSG_UNUSED(threadSafe);
 #endif
 }
 
diff --git a/src/osgDB/ConvertUTF.cpp b/src/osgDB/ConvertUTF.cpp
index 682d067bf..1b5013a89 100644
--- a/src/osgDB/ConvertUTF.cpp
+++ b/src/osgDB/ConvertUTF.cpp
@@ -65,8 +65,6 @@ std::string convertUTF16toUTF8(const wchar_t* source, unsigned sourceLength)
 #else
     //TODO: Implement for other platforms
     OSG_WARN << "ConvertUTF16toUTF8 not implemented." << std::endl;
-    OSG_UNUSED(source);
-    OSG_UNUSED(sourceLength);
     return std::string();
 #endif
 }
@@ -99,8 +97,6 @@ std::wstring convertUTF8toUTF16(const char* source, unsigned sourceLength)
 #else
     //TODO: Implement for other platforms
     OSG_WARN << "ConvertUTF8toUTF16 not implemented." << std::endl;
-    OSG_UNUSED(source);
-    OSG_UNUSED(sourceLength);
     return std::wstring();
 #endif
 }
@@ -130,7 +126,6 @@ std::string convertStringFromCurrentCodePageToUTF8(const char* source, unsigned
 
     return convertUTF16toUTF8(sUTF16);
 #else
-    OSG_UNUSED(sourceLength);
     return source;
 #endif
 }
@@ -163,7 +158,6 @@ std::string convertStringFromUTF8toCurrentCodePage(const char* source, unsigned
 
     return sDest;
 #else
-    OSG_UNUSED(sourceLength);
     return source;
 #endif
 }
diff --git a/src/osgShadow/ConvexPolyhedron.cpp b/src/osgShadow/ConvexPolyhedron.cpp
index 3ce398bac..f00dbd6ba 100644
--- a/src/osgShadow/ConvexPolyhedron.cpp
+++ b/src/osgShadow/ConvexPolyhedron.cpp
@@ -1162,9 +1162,7 @@ bool ConvexPolyhedron::checkCoherency
         dumpGeometry( );
 #endif
 
-#else
-    OSG_UNUSED(checkForNonConvexPolys);
-    OSG_UNUSED(errorPrefix);
+
 #endif // CONVEX_POLYHEDRON_CHECK_COHERENCY
     return result && convex;
 }
diff --git a/src/osgShadow/DebugShadowMap.cpp b/src/osgShadow/DebugShadowMap.cpp
index 989636294..5bc2afad3 100644
--- a/src/osgShadow/DebugShadowMap.cpp
+++ b/src/osgShadow/DebugShadowMap.cpp
@@ -154,9 +154,6 @@ bool DebugShadowMap::ViewData::DebugBoundingBox
                   << std::endl;
 
     bb_prev = bb;
-#else
-    OSG_UNUSED(bb);
-    OSG_UNUSED(name);
 #endif
     return result;
 }
@@ -195,9 +192,6 @@ bool DebugShadowMap::ViewData::DebugPolytope
     }
 
     p_prev = p;
-#else
-    OSG_UNUSED(p);
-    OSG_UNUSED(name);
 #endif
     return result;
 }
@@ -221,9 +215,6 @@ bool DebugShadowMap::ViewData::DebugMatrix
             <<"[ " << m(3,0) << " " << m(3,1) << " " << m(3,2) << " " << m(3,3) << " ]  " << std::endl;
 
     m_prev = m;
-#else
-    OSG_UNUSED(m);
-    OSG_UNUSED(name);
 #endif
     return result;
 }
diff --git a/src/osgWidget/Input.cpp b/src/osgWidget/Input.cpp
index 8a6534cd8..7b5658830 100644
--- a/src/osgWidget/Input.cpp
+++ b/src/osgWidget/Input.cpp
@@ -94,8 +94,6 @@ void Input::_calculateSize(const XYCoord& size) {
    if(width > getWidth()) setWidth(osg::round(width));
 
    if(height > getHeight()) setHeight(osg::round(height));
-#else
-    OSG_UNUSED(size);
 #endif
 }
 
@@ -283,11 +281,11 @@ void Input::positioned()
     }
 }
 
-bool Input::keyUp(int /*key*/, int /*mask*/, const WindowManager*) {
+bool Input::keyUp(int key, int mask, const WindowManager*) {
    return false;
 }
 
-bool Input::mouseDrag (double x, double /*y*/, const WindowManager*)
+bool Input::mouseDrag (double x, double y, const WindowManager*)
 {
     _mouseClickX += x;
     x = _mouseClickX;
@@ -308,7 +306,7 @@ bool Input::mouseDrag (double x, double /*y*/, const WindowManager*)
     return true;
 }
 
-bool Input::mousePush (double x, double /*y*/, const WindowManager* /*wm*/)
+bool Input::mousePush (double x, double y, const WindowManager* wm)
 {
     double offset = getOrigin().x();
     Window* window = getParent();
diff --git a/src/osgWidget/Lua.cpp b/src/osgWidget/Lua.cpp
index f84b3d7bd..9def84f2a 100644
--- a/src/osgWidget/Lua.cpp
+++ b/src/osgWidget/Lua.cpp
@@ -142,7 +142,6 @@ bool LuaEngine::eval(const std::string& code) {
     return true;
 
 #else
-    OSG_UNUSED(code);
     return noLuaFail("Can't evaluate code in LuaEngine");
 #endif
 }
@@ -164,7 +163,6 @@ bool LuaEngine::runFile(const std::string& filePath) {
     return true;
 
 #else
-    OSG_UNUSED(filePath);
     return noLuaFail("Can't run file in LuaEngine");
 #endif
 }
diff --git a/src/osgWidget/Python.cpp b/src/osgWidget/Python.cpp
index 21bc757d9..979d631d3 100644
--- a/src/osgWidget/Python.cpp
+++ b/src/osgWidget/Python.cpp
@@ -156,7 +156,6 @@ bool PythonEngine::eval(const std::string& code) {
     return true;
 
 #else
-    OSG_UNUSED(code);
     return noPythonFail("Can't evaluate code in PythonEngine");
 #endif
 }
@@ -208,7 +207,6 @@ bool PythonEngine::runFile(const std::string& filePath) {
     return true;
 
 #else
-    OSG_UNUSED(filePath);
     return noPythonFail("Can't evaluate code in PythonEngine");
 #endif
 }