I've only had trouble with XP for the times I've used it...I used it for a week or so before going back to 98SE.
I kept having problems with my NIC card...it was supposed to be supported, and I even download the microsoft drivers for it, but it kept crashing.
It assigned a lot of my devices to the same IRQ level too, which was annoying because of the IRQL_NOT_LESS_OR_EQUAL blue screen of death.
I finally decided to remove it and continue using 98SE.
I'm now dual booting Win2K Pro and Slackware 8.0, and none of them has given me any problems.
