I slipped in a CPU/MB upgrade during the holiday season
Processor - AMD Athlon 64 4000+
Motherboard - MSI NEO2 Platinum (nForce 3 Ultra)
Memory - 1GB Corsair 400MHz Dual Channel with activity LEDs
Hard Drive - (2) 80GB Western Western Digital, 7200RPM, ATA-100, 8MB Buffer
Sound Card - Sound Blaster Audigy 2 ZS
Sound - EAX 4.1
Graphics Card - NVIDIA GeForce 6800 Ultra @ 400MHz/1.10GHz
Graphics Driver - ForceWare Beta Version 67.03
I've been testing this evening with a 256MB AGP Aperature (w/FastWrites off) and performance seems to have improved. I am rebooting the system in between tests as I change AA/AF settings and noticed that the stuttering effect sometimes increases with lower graphics settings (4X AA vs 2X AA).
Hmm. Now I am thinking this may also be related to the quality of the network connection. It would be interesting if I could run my tests without being connected to a server.