On what OS du u play Team Fortress 2 ?, cause i want to change my os to vista and i'm so confused , other guys say that i'll have low frame on tf2vista , dunno maybe u guys can help me .
i have 2 pc's the first one , and the one i play usually tf2 is :
Amd athlon x2 64 2.0 ghz , 3 gb ram , 8600 gts 256 mb
So what du u think guys ?

I'm running vista and it's worked out fine for me. Frame rates are acceptable, although slightly slower than XP. but then i am running a socket 939 Athlon 64 X2 cpu so i'm just happy it plays at all
Processor Information:
Vendor: AuthenticAMD
Speed: 2216 Mhz
2 logical processors
2 physical processors
Windows Version:
Windows Vista (32 bit)
NTFS: Supported
Video Card:
Driver: NVIDIA GeForce 9600 GT
Driver Date: 24 Mar 2008
Desktop Color Depth: 32 bits per pixel
Monitor Refresh Rate: 60 Hz
DirectX Card: NVIDIA GeForce 9600 GT
Number of Monitors: 1
Number of Video Cards: 1
No SLI or Crossfire Detected
Primary Display Resolution: 1680 x 1050
Desktop Resolution: 1680 x 1050
Primary Display Size: 23.35" x 14.57" (27.48" diag)
59.3cm x 37.0cm (69.8cm diag)
Primary VRAM: 512 MB
Primary Monitor Vendor Not Detected
Primary Monitor Model: L22W-5
Supported MSAA Modes: 2x 4x 8x
Game Display Settings
Half-Life 2 Resolution: 1680 x 1050 (Fullscreen)
Half-Life 2 MSAA Disabled
Sound card:
Audio device: Speakers (Creative SB Audigy 2zs)
Memory:
RAM: 2046 Mb
... damn, now you got me back thinking about upgrading ...