diff --git a/include/osg/Image b/include/osg/Image
index b8c4f5f33..df2de3b18 100644
--- a/include/osg/Image
+++ b/include/osg/Image
@@ -99,7 +99,7 @@ class OSG_EXPORT Image : public Object
         void setImage(int s,int t,int r,
                       GLint internalTextureformat,
                       GLenum pixelFormat,GLenum type,
-                      unsigned char *data,
+                      unsigned char* data,
                       AllocationMode mode,
                       int packing=1);
             
@@ -169,10 +169,10 @@ class OSG_EXPORT Image : public Object
         bool valid() const { return _s!=0 && _t!=0 && _r!=0 && _data!=0 && _dataType!=0; }
 
         /** Raw image data. */
-        inline unsigned char *data() { return _data; }
+        inline unsigned char* data() { return _data; }
         
         /** Raw const image data. */
-        inline const unsigned char *data() const { return _data; }
+        inline const unsigned char* data() const { return _data; }
 
 
         inline unsigned char* data(int column, int row=0,int image=0)
@@ -279,11 +279,11 @@ class OSG_EXPORT Image : public Object
         unsigned int _packing;
 
         AllocationMode _allocationMode;
-        unsigned char *_data;
+        unsigned char* _data;
         
         void deallocateData();
         
-        void setData(unsigned char *data,AllocationMode allocationMode);
+        void setData(unsigned char* data,AllocationMode allocationMode);
 
         unsigned int _modifiedCount;
 
diff --git a/src/osg/Texture.cpp b/src/osg/Texture.cpp
index 84e71495a..eea955756 100644
--- a/src/osg/Texture.cpp
+++ b/src/osg/Texture.cpp
@@ -842,17 +842,16 @@ void Texture::applyTexImage2D_load(State& state, GLenum target, const Image* ima
         
     }    
 
-    unsigned int dataMinusOffset=0;
-    unsigned int dataPlusOffset=0;
-
+    unsigned char* dataMinusOffset = 0;
+    unsigned char* dataPlusOffset = 0;
 
     const PixelBufferObject* pbo = image->getPixelBufferObject();
     if (pbo && pbo->isBufferObjectSupported(contextID) && !needImageRescale)
     {
         pbo->compileBuffer(state);
         pbo->bindBuffer(contextID);
-        dataMinusOffset = (unsigned int) data;
-        dataPlusOffset=pbo->offset(); // -dataMinusOffset+dataPlusOffset
+        dataMinusOffset = data;
+        dataPlusOffset = reinterpret_cast<unsigned char*>(pbo->offset());
 #ifdef DO_TIMING
         osg::notify(osg::NOTICE)<<"after PBO "<<osg::Timer::instance()->delta_m(start_tick,osg::Timer::instance()->tick())<<"ms"<<std::endl;
 #endif
@@ -1082,16 +1081,16 @@ void Texture::applyTexImage2D_subload(State& state, GLenum target, const Image*
 
     bool useHardwareMipMapGeneration = !image->isMipmap() && _useHardwareMipMapGeneration && generateMipMapSupported;
     
-    unsigned int dataMinusOffset=0;
-    unsigned int dataPlusOffset=0;
+    unsigned char* dataMinusOffset=0;
+    unsigned char* dataPlusOffset=0;
 
     const PixelBufferObject* pbo = image->getPixelBufferObject();
     if (pbo && pbo->isBufferObjectSupported(contextID) && !needImageRescale)
     {
         pbo->compileBuffer(state);
         pbo->bindBuffer(contextID);
-        dataMinusOffset = (unsigned int) data;
-        dataPlusOffset=pbo->offset(); // -dataMinusOffset+dataPlusOffset
+        dataMinusOffset = data;
+        dataPlusOffset = reinterpret_cast<unsigned char*>(pbo->offset());
 #ifdef DO_TIMING
         osg::notify(osg::NOTICE)<<"after PBO "<<osg::Timer::instance()->delta_m(start_tick,osg::Timer::instance()->tick())<<"ms"<<std::endl;
 #endif
diff --git a/src/osg/TextureRectangle.cpp b/src/osg/TextureRectangle.cpp
index 486e1362b..36633a192 100644
--- a/src/osg/TextureRectangle.cpp
+++ b/src/osg/TextureRectangle.cpp
@@ -244,16 +244,16 @@ void TextureRectangle::applyTexImage_load(GLenum target, Image* image, State& st
         #endif
     }
 
-    unsigned int dataMinusOffset=0;
-    unsigned int dataPlusOffset=0;
+    unsigned char* dataMinusOffset = 0;
+    unsigned char* dataPlusOffset = 0;
 
     const PixelBufferObject* pbo = image->getPixelBufferObject();
     if (pbo && pbo->isBufferObjectSupported(contextID))
     {
         pbo->compileBuffer(state);
         pbo->bindBuffer(contextID);
-        dataMinusOffset=(unsigned int)image->data();
-        dataPlusOffset=pbo->offset(); // -dataMinusOffset+dataPlusOffset
+        dataMinusOffset = image->data();
+        dataPlusOffset = reinterpret_cast<unsigned char*>(pbo->offset());
     }
     else
     {
@@ -265,7 +265,7 @@ void TextureRectangle::applyTexImage_load(GLenum target, Image* image, State& st
                  image->s(), image->t(), 0,
                  (GLenum)image->getPixelFormat(),
                  (GLenum)image->getDataType(),
-                 image->data() + dataPlusOffset-dataMinusOffset);
+                 image->data() - dataMinusOffset + dataPlusOffset );
     
 
     if (pbo)
@@ -311,16 +311,16 @@ void TextureRectangle::applyTexImage_subload(GLenum target, Image* image, State&
     osg::Timer_t start_tick = osg::Timer::instance()->tick();
     osg::notify(osg::NOTICE)<<"glTexSubImage2D pixelFormat = "<<std::hex<<image->getPixelFormat()<<std::dec<<std::endl;
 #endif
-    unsigned int dataMinusOffset=0;
-    unsigned int dataPlusOffset=0;
+    unsigned char* dataMinusOffset = 0;
+    unsigned char* dataPlusOffset = 0;
 
     const PixelBufferObject* pbo = image->getPixelBufferObject();
     if (pbo && pbo->isBufferObjectSupported(contextID))
     {
         pbo->compileBuffer(state);
         pbo->bindBuffer(contextID);
-        dataMinusOffset=(unsigned int)image->data();
-        dataPlusOffset=pbo->offset(); // -dataMinusOffset+dataPlusOffset
+        dataMinusOffset = image->data();
+        dataPlusOffset = reinterpret_cast<unsigned char*>(pbo->offset()); // -dataMinusOffset+dataPlusOffset
 
 #ifdef DO_TIMING
         osg::notify(osg::NOTICE)<<"after PBO "<<osg::Timer::instance()->delta_m(start_tick,osg::Timer::instance()->tick())<<"ms"<<std::endl;
@@ -331,14 +331,15 @@ void TextureRectangle::applyTexImage_subload(GLenum target, Image* image, State&
     {
         pbo = 0;
     }
-
+    
+    
     // UH: ignoring compressed for now.
     glTexSubImage2D(target, 0, 
                  0,0,
                  image->s(), image->t(),
                  (GLenum)image->getPixelFormat(),
                  (GLenum)image->getDataType(),
-                 image->data() + dataPlusOffset-dataMinusOffset);
+                 image->data() - dataMinusOffset + dataPlusOffset  );
 
     if (pbo)
     {