If I have Sins in full-screen mode and alt-tab to another application, Sins continues to use 50% CPU (on a dual core system) and keeps the laptop running hot and noisy because of this. However, if I have Sins in windowed mode and minimise it, it ceases to use any CPU. There does not appear to be any way to "minimise" the full-screen version. Right-clicking on the taskbar entry only provides the "restore" and "close" options. I would expect to see the full-screen mode cease to use CPU when it's not in the foreground. Is this a general problem or specific to me? I have a Core 2 Duo with 2GB RAM running Windows XP (tablet edition). Video card is an NVIDIA Quadro NVS 110M.