I'm having a problem, I seem to be getting this problem where every now and then, my CPU goes up and down, even when I'm not using it, and it creates this big massive lag. It will go from say 0% to 8% to 41% on the taskmanager, then back to 0, back up, etc, you get the idea. Anyway, I'm sure it's a virus of some kind, but then I've got up to date purchased copy of McAfee, and Spybot, which reveal nothing, I've also used HiJackThis to see if I can find anything, and I don't think there is any problems there, although I can't really tell if all of those things could be disguises. Anyway, what do you think it could be? It hasn't happened for 12 hours at least, then just 10 minutes ago, it happened for a while, and then it went away after 5 minutes. It only started happening two days ago..