Well, I also tried to run CS in Win98 compatibility mode and it still had the same hang up. I agree that it might have something to do with the video drivers, but I was running fine for two weeks. No new software, no new drivers, and no new hardware. Why, why, why! When I installed XP, I was running W2K Pro. I chose to use the "save my settings" install. Upgrade versus clean install?!?!?! Did any of you guys just upgrade with your XP or did you chose to do a clean install?
The big question mark for me is that CS worked without a hitch for two weeks, 2 to 3 hours per night, 1024 x 768 in 32 bit mode, using voice and having just the usual freeze ups every now and then. Yesterday that all changed and now I can't even get into a game.