title: Debugging a performance issue on ListBoxDragDropTarget (Silverlight Toolkit)?
body: <p>I have a complex project using SilverLight Toolkit's ListBoxDragDropTarget for drag-drop operations and it is maxing CPU.  I tried to reproduce the issue in a small sample project, but then it works fine.  The problem persists when I remove our custom styles and all other controls from the page, but the page is hosted in another page's ScrollView.</p>
  
  <p>"EnableRedrawRegions" shows that the screen gets redrawn on every frame.  My question is this:  How can I track down the cause of this constant redrawing?</p>