diff --git a/examples/osgkeyboardmouse/osgkeyboardmouse.cpp b/examples/osgkeyboardmouse/osgkeyboardmouse.cpp
index 3954a864c..1b98db0e9 100644
--- a/examples/osgkeyboardmouse/osgkeyboardmouse.cpp
+++ b/examples/osgkeyboardmouse/osgkeyboardmouse.cpp
@@ -186,13 +186,18 @@ public:
 
         // remap the mouse x,y into viewport coordinates.
         
+
+       osg::notify(osg::NOTICE)<<std::endl;
+
+#if 0
+        // use non dimension coordinates - in projection/clip space
+        osgUtil::LineSegmentIntersector* picker = new osgUtil::LineSegmentIntersector(osgUtil::Intersector::PROJECTION, osg::Vec3d(ea.getXnormalized(),ea.getYnormalized(),0.0), osg::Vec3d(ea.getXnormalized(),ea.getYnormalized(),1.0) );
+#else
+        // use window coordinates
         float mx = _sceneView->getViewport()->x() + (int)((float)_sceneView->getViewport()->width()*(ea.getXnormalized()*0.5f+0.5f));
         float my = _sceneView->getViewport()->y() + (int)((float)_sceneView->getViewport()->height()*(ea.getYnormalized()*0.5f+0.5f));
-
-#if 1
-
-        osgUtil::LineSegmentIntersector* picker = new osgUtil::LineSegmentIntersector(osg::Vec3d(mx,my,0.0), osg::Vec3d(mx,my,1.0) );
-        picker->setCoordinateFrame(osgUtil::Intersector::WINDOW);
+        osgUtil::LineSegmentIntersector* picker = new osgUtil::LineSegmentIntersector(osgUtil::Intersector::WINDOW, osg::Vec3d(mx,my,0.0), osg::Vec3d(mx,my,1.0) );
+#endif
 
         osgUtil::IntersectionVisitor iv(picker);
         
@@ -205,7 +210,7 @@ public:
             osgUtil::LineSegmentIntersector::Intersection intersection = picker->getFirstIntersection();
             osg::notify(osg::NOTICE)<<"Picking "<<intersection.localIntersectionPoint<<std::endl;
 
-
+#if 0
             osg::NodePath& nodePath = intersection.nodePath;
             osg::Node* node = (nodePath.size()>=1)?nodePath[nodePath.size()-1]:0;
             osg::Group* parent = (nodePath.size()>=2)?dynamic_cast<osg::Group*>(nodePath[nodePath.size()-2]):0;
@@ -238,64 +243,34 @@ public:
                     }
                 }
             }
+#endif
 
         }
         
 
-#else
-
-        // do the pick traversal.
-        osgUtil::PickVisitor pick(_sceneView->getViewport(),
-                                  _sceneView->getProjectionMatrix(), 
-                                  _sceneView->getViewMatrix(), mx, my);
-        scene->accept(pick);
-
-        osgUtil::PickVisitor::LineSegmentHitListMap& segHitList = pick.getSegHitList();
-        if (!segHitList.empty() && !segHitList.begin()->second.empty())
         {
-            std::cout<<"Got hits"<<std::endl;
+            float mx = _sceneView->getViewport()->x() + (int)((float)_sceneView->getViewport()->width()*(ea.getXnormalized()*0.5f+0.5f));
+            float my = _sceneView->getViewport()->y() + (int)((float)_sceneView->getViewport()->height()*(ea.getYnormalized()*0.5f+0.5f));
 
-            // get the hits for the first segment
-            osgUtil::PickVisitor::HitList& hits = segHitList.begin()->second;
+            // do the pick traversal use the other PickVisitor to double check results.
+            osgUtil::PickVisitor pick(_sceneView->getViewport(),
+                                      _sceneView->getProjectionMatrix(), 
+                                      _sceneView->getViewMatrix(), mx, my);
+            scene->accept(pick);
 
-            // just take the first hit - nearest the eye point.
-            osgUtil::Hit& hit = hits.front();
-
-            osg::NodePath& nodePath = hit._nodePath;
-            osg::Node* node = (nodePath.size()>=1)?nodePath[nodePath.size()-1]:0;
-            osg::Group* parent = (nodePath.size()>=2)?dynamic_cast<osg::Group*>(nodePath[nodePath.size()-2]):0;
-
-            if (node) std::cout<<"  Hits "<<node->className()<<" nodePath size"<<nodePath.size()<<std::endl;
-
-            // now we try to decorate the hit node by the osgFX::Scribe to show that its been "picked"
-            if (parent && node)
+            osgUtil::PickVisitor::LineSegmentHitListMap& segHitList = pick.getSegHitList();
+            if (!segHitList.empty() && !segHitList.begin()->second.empty())
             {
 
-                std::cout<<"  parent "<<parent->className()<<std::endl;
+                // get the hits for the first segment
+                osgUtil::PickVisitor::HitList& hits = segHitList.begin()->second;
 
-                osgFX::Scribe* parentAsScribe = dynamic_cast<osgFX::Scribe*>(parent);
-                if (!parentAsScribe)
-                {
-                    // node not already picked, so highlight it with an osgFX::Scribe
-                    osgFX::Scribe* scribe = new osgFX::Scribe();
-                    scribe->addChild(node);
-                    parent->replaceChild(node,scribe);
-                }
-                else
-                {
-                    // node already picked so we want to remove scribe to unpick it.
-                    osg::Node::ParentList parentList = parentAsScribe->getParents();
-                    for(osg::Node::ParentList::iterator itr=parentList.begin();
-                        itr!=parentList.end();
-                        ++itr)
-                    {
-                        (*itr)->replaceChild(parentAsScribe,node);
-                    }
-                }
+                // just take the first hit - nearest the eye point.
+                osgUtil::Hit& hit = hits.front();
+
+                std::cout<<"Got hits"<<hit.getLocalIntersectPoint()<<std::endl;
             }
-
         }
-#endif
 
     }
 
diff --git a/include/osgUtil/IntersectionVisitor b/include/osgUtil/IntersectionVisitor
index 530ab56d9..93cbc8da5 100644
--- a/include/osgUtil/IntersectionVisitor
+++ b/include/osgUtil/IntersectionVisitor
@@ -42,8 +42,8 @@ class Intersector : public osg::Referenced
             MODEL
         };
         
-        Intersector():
-            _coordinateFrame(MODEL),
+        Intersector(CoordinateFrame cf=MODEL):
+            _coordinateFrame(cf),
             _disabledCount(0) {}
     
         void setCoordinateFrame(CoordinateFrame cf) { _coordinateFrame = cf; }
@@ -84,6 +84,8 @@ class OSGUTIL_EXPORT LineSegmentIntersector : public Intersector
     
         LineSegmentIntersector(const osg::Vec3d& start, const osg::Vec3d& end, LineSegmentIntersector* parent=0);
         
+        LineSegmentIntersector(CoordinateFrame cf, const osg::Vec3d& start, const osg::Vec3d& end, LineSegmentIntersector* parent=0);
+        
         struct Intersection
         {
             Intersection():
diff --git a/src/osgUtil/IntersectionVisitor.cpp b/src/osgUtil/IntersectionVisitor.cpp
index 9cbf88f4d..8382c103f 100644
--- a/src/osgUtil/IntersectionVisitor.cpp
+++ b/src/osgUtil/IntersectionVisitor.cpp
@@ -217,6 +217,14 @@ LineSegmentIntersector::LineSegmentIntersector(const osg::Vec3d& start, const os
 {
 }
 
+LineSegmentIntersector::LineSegmentIntersector(CoordinateFrame cf, const osg::Vec3d& start, const osg::Vec3d& end, LineSegmentIntersector* parent):
+    Intersector(cf),
+    _parent(parent),
+    _start(start),
+    _end(end)
+{
+}
+
 Intersector* LineSegmentIntersector::clone(osgUtil::IntersectionVisitor& iv)
 {
     if (_coordinateFrame==MODEL && iv.getModelMatrix()==0)
@@ -257,7 +265,7 @@ Intersector* LineSegmentIntersector::clone(osgUtil::IntersectionVisitor& iv)
 
 bool LineSegmentIntersector::enter(const osg::Node& node)
 {
-    return intersects( node.getBound() );
+    return !node.isCullingActive() || intersects( node.getBound() );
 }
 
 void LineSegmentIntersector::leave()
@@ -270,6 +278,10 @@ void LineSegmentIntersector::intersect(osgUtil::IntersectionVisitor& iv, osg::Dr
     osg::Vec3d s(_start), e(_end);    
     if ( !intersectAndClip( s, e, drawable->getBound() ) ) return;
 
+    // reset the clipped range as it can be too close in on the BB, and cause missing due precission issues.
+    s = _start;
+    e = _end;
+
     osg::TriangleFunctor<TriangleIntersector> ti;
     ti.set(s,e);
     drawable->accept(ti);
@@ -473,7 +485,9 @@ bool LineSegmentIntersector::intersectAndClip(osg::Vec3d& s, osg::Vec3d& e,const
         }
     }
     
-    if (s==e) return false;
+    // osg::notify(osg::NOTICE)<<"clampped segment "<<s<<" "<<e<<std::endl;
+    
+    // if (s==e) return false;
 
     return true;
 }
@@ -659,11 +673,11 @@ void IntersectionVisitor::apply(osg::Group& group)
 
 void IntersectionVisitor::apply(osg::Geode& geode)
 {
-    osg::notify(osg::NOTICE)<<"apply(Geode&)"<<std::endl;
+    // osg::notify(osg::NOTICE)<<"apply(Geode&)"<<std::endl;
 
     if (!enter(geode)) return;
 
-    osg::notify(osg::NOTICE)<<"inside apply(Geode&)"<<std::endl;
+    // osg::notify(osg::NOTICE)<<"inside apply(Geode&)"<<std::endl;
 
     for(unsigned int i=0; i<geode.getNumDrawables(); ++i)
     {
@@ -768,11 +782,11 @@ void IntersectionVisitor::apply(osg::Projection& projection)
 
 void IntersectionVisitor::apply(osg::CameraNode& camera)
 {
-    osg::notify(osg::NOTICE)<<"apply(CameraNode&)"<<std::endl;
+    //osg::notify(osg::NOTICE)<<"apply(CameraNode&)"<<std::endl;
 
-    // if (!enter(camera)) return;
+    if (!enter(camera)) return;
     
-    osg::notify(osg::NOTICE)<<"inside apply(CameraNode&)"<<std::endl;
+    // osg::notify(osg::NOTICE)<<"inside apply(CameraNode&)"<<std::endl;
 
     if (camera.getViewport()) pushWindowMatrix( camera.getViewport() );
     pushProjectionMatrix( new osg::RefMatrix(camera.getProjectionMatrix()) );