I have been getting a lot of these, as well as the computer completely freezing up and giving me a black screen of death. Invariably it happens in Direct3D games with 3D sound. More often than not, it happens when using menus in the game, not during actual gameplay. The problem has not responded to driver changes, removal of all peripherals (NIC and TV Tuner cards, gaming devices, printers, scanners, etc.), and it has not responded to various BIOS settings.
Some guys (on various nForce boards) say it's power supply. Which I doubt, because I have a 330 W Antec TruePower supply that should be more than sufficient.
Some other guys have attributed it to a problem with the onboard sound. So I have disabled the onboard sound and installed an Audigy board. So far so good, no problems.
I'd still like to hear what some of the resident experts have to say.
Config as follows:
Antec 660B Minitower
330W TruePower PS
2 x case fans (standard, attached to PS fan-only connectors)
1 case fan attached to mobo 3-pin connector.
Asus A7N266-C
512 MB PC2100 (Kingston)
Abit Geforce4 4600
Linksys PCI 10/100 NIC
Hauppauge WinTV PCI
HP Deskjet 3420
Canon CanoScan FB 620P
CH USB HOTAS
Gravis Gamepad(s) Pro USB
Logitech Wingman Formula Force USB
Win2k SP3
DirectX 8.1
Latest drivers for everything (and I do mean everything).