diff --git a/include/osg/AutoTransform b/include/osg/AutoTransform
index 7867b0ff9..0e5691110 100644
--- a/include/osg/AutoTransform
+++ b/include/osg/AutoTransform
@@ -89,8 +89,7 @@ class OSG_EXPORT AutoTransform : public Transform
         /** Get the front face direction normal. */
         inline const Vec3& getNormal() const { return _normal; }
 
-        void setAutoScaleToScreen(bool autoScaleToScreen) { _autoScaleToScreen = autoScaleToScreen; }
-
+        void setAutoScaleToScreen(bool autoScaleToScreen);
         bool getAutoScaleToScreen() const { return _autoScaleToScreen; }
 
         void setAutoScaleTransitionWidthRatio(float ratio) { _autoScaleTransitionWidthRatio = ratio; }
@@ -101,9 +100,6 @@ class OSG_EXPORT AutoTransform : public Transform
 
         virtual bool computeWorldToLocalMatrix(Matrix& matrix,NodeVisitor* nv) const;
 
-        virtual BoundingSphere computeBound() const;
-
-
     protected :
 
         virtual ~AutoTransform() {}
@@ -125,9 +121,6 @@ class OSG_EXPORT AutoTransform : public Transform
 
         osg::Matrixd computeMatrix(const osg::NodeVisitor* nv) const;
 
-        mutable bool                    _matrixInitalized;
-        mutable osg::Matrixd            _cachedMatrix;
-
         enum AxisAligned
         {
             AXIAL_ROT_X_AXIS=ROTATE_TO_AXIS+1,
diff --git a/src/osg/AutoTransform.cpp b/src/osg/AutoTransform.cpp
index 5612db316..01b8936d7 100644
--- a/src/osg/AutoTransform.cpp
+++ b/src/osg/AutoTransform.cpp
@@ -25,7 +25,6 @@ AutoTransform::AutoTransform():
     _minimumScale(0.0),
     _maximumScale(DBL_MAX),
     _autoScaleTransitionWidthRatio(0.25),
-    _matrixInitalized(false),
     _axis(0.0f,0.0f,1.0f),
     _normal(0.0f,-1.0f,0.0f),
     _cachedMode(NO_ROTATION),
@@ -46,7 +45,6 @@ AutoTransform::AutoTransform(const AutoTransform& pat,const CopyOp& copyop):
     _minimumScale(pat._minimumScale),
     _maximumScale(pat._maximumScale),
     _autoScaleTransitionWidthRatio(pat._autoScaleTransitionWidthRatio),
-    _matrixInitalized(false),
     _axis(pat._axis),
     _normal(pat._normal),
     _cachedMode(pat._cachedMode),
@@ -55,6 +53,13 @@ AutoTransform::AutoTransform(const AutoTransform& pat,const CopyOp& copyop):
 //    setNumChildrenRequiringUpdateTraversal(getNumChildrenRequiringUpdateTraversal()+1);
 }
 
+void AutoTransform::setAutoScaleToScreen(bool autoScaleToScreen)
+{
+    _autoScaleToScreen = autoScaleToScreen;
+    if (_autoScaleToScreen) setCullingActive(false);
+}
+
+
 void AutoTransform::setAutoRotateMode(AutoRotateMode mode)
 {
     _autoRotateMode = mode;
@@ -135,8 +140,6 @@ bool AutoTransform::computeWorldToLocalMatrix(Matrix& matrix,NodeVisitor* nv) co
 
 osg::Matrixd AutoTransform::computeMatrix(const osg::NodeVisitor* nv) const
 {
-    _matrixInitalized = true;
-
     Quat rotation = _rotation;
     osg::Vec3d scale = _scale;
 
@@ -297,19 +300,5 @@ osg::Matrixd AutoTransform::computeMatrix(const osg::NodeVisitor* nv) const
     matrix.preMultScale(scale);
     matrix.preMultTranslate(-_pivotPoint);
 
-    _cachedMatrix = matrix;
-
     return matrix;
 }
-
-BoundingSphere AutoTransform::computeBound() const
-{
-    BoundingSphere bsphere;
-
-    if ( getAutoScaleToScreen() && !_matrixInitalized )
-        return bsphere;
-
-    bsphere = Transform::computeBound();
-
-    return bsphere;
-}