I have a XFX GeForce 5200 FX 256 MB (although tomorrow I will hopefully have a Gigabyte 6600 GT
) and my system has never frozen because of this. Actually, come to think of it, it's been in two computer and hasn't caused either one to freeze. I don't know though, maybe you have some compatibility problems with a driver you have installed. I had the beta drivers (7x.xx) for a while and it caused crashing when I played Tribes: Vengeance. This was a known problem with Tribes: Vengeance though, and I rolled the driver back and it didn't happen anymore.