There is a computer that sometimes pauses for half a second in games, all games, but never in other application types. It doesn't crash, but the pause annoys the user and I can't find the source. No software takes resources while idle, no suspect software found.
A7N266-VM with 2.03 nforce drivers
ATI Radeon 8500 AGP 4x, tried with Catalyst 3.0, 3.1 and 3.2
Sound Blaster Live with latest driver.
Windows 2000 SP3
Directx 9