The first couple weeks I played DS I crashed at random after a bout 30 to 60 minutes.
My System:
Athlon 1.4ghz
Iwill K266
Creative SB Live Plat 5.1
Gforce2 GTS 64mb
512mb
All running on Win XP pro.
I tried everything I could think of.. including using the onboard C-media with a fresh install of XP instead of the Creative. I still crashed. From what I saw off some of the DS boards, there is a problem with XP, Via chipset MB, Gforce cards and SB Live when they are all combined.
I tried old drivers.. native XP drivers.. and new drivers. No luck. The one thing I didnt try was a Forced ACPI install of XP. It's possible that the way XP handles it's resource allocation with ACPI and that combination of hardware is the problem.
I fixed it by doing a clean install of XP with an ATI Radeon All in Wonder. Game plays fine with no crashes now.
As does Freedom Force, which had all the same symptoms that Dungeon Siege did.