In Quake 3 it happens in exactly 4 minute intervals, it locks up for about 5 seconds then comes back. It's rather annoying. I just had a GF FX 5900 Ultra in here and it worked fine so I'm pretty sure its video card related. Anyone have any idea why it would do that? I'm currently running the lately Omega drivers. Other games seem to work fine, been running 3dmark 2k1 and 2k3 tests with no problem as well. I have a Radeon 9800 Pro.