diff --git a/src/osg/BufferObject.cpp b/src/osg/BufferObject.cpp
index df36f123b..cad59303f 100644
--- a/src/osg/BufferObject.cpp
+++ b/src/osg/BufferObject.cpp
@@ -1104,7 +1104,7 @@ void BufferObject::resizeGLObjectBuffers(unsigned int maxSize)
 
 void BufferObject::releaseGLObjects(State* state) const
 {
-    OSG_INFO<<"BufferObject::releaseGLObjects("<<state<<")"<<std::endl;
+    OSG_DEBUG<<"BufferObject::releaseGLObjects("<<state<<")"<<std::endl;
     if (state)
     {
         unsigned int contextID = state->getContextID();
@@ -1260,7 +1260,7 @@ void BufferData::resizeGLObjectBuffers(unsigned int maxSize)
 
 void BufferData::releaseGLObjects(State* state) const
 {
-    OSG_INFO<<"BufferData::releaseGLObjects("<<state<<")"<<std::endl;
+    OSG_DEBUG<<"BufferData::releaseGLObjects("<<state<<")"<<std::endl;
     if (_bufferObject.valid())
     {
         _bufferObject->releaseGLObjects(state);
@@ -1369,7 +1369,7 @@ PixelBufferObject::PixelBufferObject(osg::Image* image):
     setTarget(GL_PIXEL_UNPACK_BUFFER_ARB);
     setUsage(GL_STREAM_DRAW_ARB);
 
-    OSG_INFO<<"Constructing PixelBufferObject for image="<<image<<std::endl;
+    OSG_DEBUG<<"Constructing PixelBufferObject for image="<<image<<std::endl;
 
     if (image) setBufferData(0, image);
 }
diff --git a/src/osg/StateAttribute.cpp b/src/osg/StateAttribute.cpp
index 86cb9b9d8..0dc99d5a6 100644
--- a/src/osg/StateAttribute.cpp
+++ b/src/osg/StateAttribute.cpp
@@ -56,13 +56,13 @@ void StateAttribute::setUpdateCallback(StateAttributeCallback* uc)
 
     if (delta!=0)
     {
-        OSG_INFO<<"Going to set StateAttribute parents"<<std::endl;
+        OSG_DEBUG<<"Going to set StateAttribute parents"<<std::endl;
 
         for(ParentList::iterator itr=_parents.begin();
             itr!=_parents.end();
             ++itr)
         {
-            OSG_INFO<<"   Setting StateAttribute parent"<<std::endl;
+            OSG_DEBUG<<"   Setting StateAttribute parent"<<std::endl;
 
             (*itr)->setNumChildrenRequiringUpdateTraversal((*itr)->getNumChildrenRequiringUpdateTraversal()+delta);
         }
diff --git a/src/osgPlugins/png/ReaderWriterPNG.cpp b/src/osgPlugins/png/ReaderWriterPNG.cpp
index 9e06425af..8190a4b4d 100644
--- a/src/osgPlugins/png/ReaderWriterPNG.cpp
+++ b/src/osgPlugins/png/ReaderWriterPNG.cpp
@@ -210,10 +210,10 @@ class ReaderWriterPNG : public osgDB::ReaderWriter
                     pinfo->Depth  = depth;
                 }
 
-                OSG_INFO<<"width="<<width<<" height="<<height<<" depth="<<depth<<std::endl;
-                if ( color == PNG_COLOR_TYPE_RGB) { OSG_INFO << "color == PNG_COLOR_TYPE_RGB "<<std::endl; }
-                if ( color == PNG_COLOR_TYPE_GRAY) { OSG_INFO << "color == PNG_COLOR_TYPE_GRAY "<<std::endl; }
-                if ( color == PNG_COLOR_TYPE_GRAY_ALPHA) { OSG_INFO << "color ==  PNG_COLOR_TYPE_GRAY_ALPHA"<<std::endl; }
+                OSG_DEBUG<<"width="<<width<<" height="<<height<<" depth="<<depth<<std::endl;
+                if ( color == PNG_COLOR_TYPE_RGB) { OSG_DEBUG << "color == PNG_COLOR_TYPE_RGB "<<std::endl; }
+                if ( color == PNG_COLOR_TYPE_GRAY) { OSG_DEBUG << "color == PNG_COLOR_TYPE_GRAY "<<std::endl; }
+                if ( color == PNG_COLOR_TYPE_GRAY_ALPHA) { OSG_DEBUG << "color ==  PNG_COLOR_TYPE_GRAY_ALPHA"<<std::endl; }
 
                 // png default to big endian, so we'll need to swap bytes if on a little endian machine.
                 if (depth>8 && getCpuByteOrder()==osg::LittleEndian)