When I try to delete a line or segment(anything).  It doesn't show that it is deleted until I zoom in or out.  Then it updates the view.  I have tried uninstalling and reinstalling it.  I have just finished updating my video drivers.  I am running windows 7 x64, Quadro 2000 video card and draftsight is version is V1R3.1 x64. 

Thanks

Kyle