Restarting? yes.  Lol, I give it a restart every time I stop mining.  I just realized I wasnt very specific about the crashes.  When it crashes, I mean the whole machine is unresponsive.  Not even the cursor will move.  Everything is completely locked up until after a hard reset.  And I am pretty sure about using OpenCL.  I can try to double check though.  I am using the defaults if that makes a difference.  And I do have CUDA installed.  I mean, everything works; my hashrate is normal for the video card I am using UNTIL I try to stop it.

Lame sauce that I cant even post this in the guiminer thread and I am stuck on the noob forum 

But as the title says, guiminer crashes my machine every time I stop the program.  I have tested this on multiple nvidia cards with the same result.  I have even updated my drivers a few times and no fix.  I was wondering if anyone had a similar problem or knew a fix

Thanks