We just recently upgraded to version 2012.  The problem that I'm having is, randomly when you open a dialog box the dialog box will disappear.  The problem is the dialog box is still opened somewhere and is waiting for input.  No matter what I do I can't find the dialog box and need to force a shutdown of Solidworks to get past this problem.  This of course results in lost work.  Is this a known issue or is it something that is unique to me?

Thanks for any help.