Are you playing on a dual core or hyperthreading processor? If so, there are instructions
here to fix the bugs. If you've not got one of those processors, try the link anyway. Lots of helpful stuff. (thanks goes to SpiritWarrior for that link. [img]smile.gif[/img] ) SS2 also had compatability issues with XP. If this hasn't been fixed for the freeware version, there's a patch on Looking Glass's site.