Yeah, WinME was before Win2000. ME is still largely based on W98 code, whereas 2000 is made of the same stock as XP
i.e. XP is the 2001 update to W2000.
Jorath - I've had the MS Optical Intellimouse explorer for almost 2 years and have had absolutely no probs. It's a brilliant mouse. I love it anyway.
Jorath, check your task manager, maybe you're running out of memory and windows can't increase your page file size? Just a long shot, probably wrong...