SW2011 - Items in drawings become unpickable, requires exit & reload of drawing

System: Dell T3500, dual-core Xeon, 12GB RAM, NVidia Quadro FX4500, Win 7 Pro and SW2011.

Many times per day while detailing drawings I get to the point where I can no longer pick anything on the drawing (object lines, dimensions, notes or tables, anything) to add a dimension or to modify one.  

When this happens I can usually temporarily resolve it by exiting the drawing, then reloading it but occasionally I need to exit SW completely.  Once its working again it will happen again, sometimes quickly, othertimes not so quickly and it doesn't seem to be related to the size of the model as I just had it happen on a very simple assembly with only 3 simple parts and nothing else loaded.

This is a huge time-waster, any ideas?

Rob Haas

Mech. Des. @ AMI

Robert.Haas@Comcast.net

SolidworksDrawings And Detailing