Hi Fox First of all Have you installed all official Patches? I also have 2048 mb ram, but an AMD and a no name graphics card. Since I 'fixed' my SC4 I can run it for hours on end (6 hours was the longest yet) and I havent had one crash yet. I always run it on CPU0 - perhaps a different CPU will do the trick for you. Or try killing non required processes before starting it. hope you get to solve it soon, I know how frustrating it can be nanomaus