Upgraded to Windows XP 64 today and am seeing a problem I did not see under W2K.
I dual log in an MMO in window mode, and have been doing this for months without any problems under W2K. Now, when both copies are running I am seeing about 5FPS instead of 60FPS. The problem can be alleviated if one copy is minimized, or run in full screen mode instead of window mode. But doing so is an annoyance for this game, because running in fullscreen mode and alt-tabbing around can corrupt the video.
My question is: Why would this work under W2K and not XP 64?
MMO: Anarchy Online.
AMD64 4000+
Nvidia PCIE 6800GT (Running 1920x1200)
1 Gig Corsair 3200 XMS
MSI K8N Platnium SLI
2xRaptor (Striped)