Okay, here's the deal. Any time I get up from my computer, I lock my desktop. Also, I use the "My Pictures" screensaver provided with Windows XP. And I run AutoCAD Mechanical 2008. A vast majority of the time, when I come back to my computer, I crash AutoCAD. I wiggle the mouse to get out of the screensaver, I log back into my desktop, and a wonderful "Hey, you've crashed" message is staring me in the face. If I'm not mistaken, there's usually some kind of memory related error message as well. Has anyone else experienced this? It's driving me nuts. I don't want to disable either feature, so I need a work around. Right now, I just make sure that I save EVERY time I get up from my desk, because this has bitten me a few times in the past. If that's my only fix, then fine, but it's pretty annoying,so I'm hoping for a better resolution. Any help anyone could give me would be fantastic. TIA.