ok well im running windows xp with a nvidia 512 graphics card with 2 gb of ram and a pentium 4 ht with 2.8 ghz. Never have a problem playing WoW or other high end games until the system idle process came out of no where. Im playing a game or something that requires alot of cpu usage and the process goes hogs my cpu and sources and lags up my computer even when norton is running which uses a farily large amount of cpu