Hey guys, I've had this problem for a while, then I fixed it. I just got back to wow today, after my months break. I find myself with the same problem again. My fps is 40+ and smooth when just outside, except for major cities. As soon as i enter combat in: a duel, arena or standing near people my pc just fucks up. I get 1-5 fps then freezing my screen for seconds. My pc seems to be unable to handle wow, and I know my vid card isn't all that great, but it just can't be outdated that badly. Blizz wouldn't even consider helping me, all they said was "not supported" . There must be some1 that could helpme figure this out. I'll post my specs here:
Thanks in advance

Mainboard : PEGATRON CORPORATION Benicia
Chipset : Intel G31/G33/G35
Processor : Intel Core 2 Duo E4600 @ 2400MHz
Physical Memory : 3072MBDDR2-SDRAM
Video Card : NVIDIA GeForce 8400
Hard Disk : Seagate ST3360320AS (360GB)
DVD-Rom Drive : HL-DT-ST DVD-RAM GH10L
Monitor Type : LG Electronics W1952 - 19 inches
Network Card : Realtek Semiconductor RTL8168/8111 PCIe Gigabit Ethernet Adapter
Operating System : Windows Vista (TM) Home Premium Home Edition Media Center 6.00.6002 Service Pack 2 (32-bit)
DirectX : Version 11.00
Windows Performance Index : 4.0 on 5.9