I share my PC with my roomie. [Generous, ain't it?]. He's got his own account, and I have mine. Whenever I log in, and he's logged on, I get a message that says "Windows UI has encountered an error and needs to close". And there's usually a lot of these. I dunno how to fix it--I thought it might have been his screensaver, but now I know it's not. I dunno what the deal is. Any thoughts?