PC freeze while playing online

[AjAx30]

ok.. this problem has been going on for about 3 weeks now and i just cant get it fixed.. Whenever i play Battlefield 2 or 2142, or quake wars enemy territory online, the game freezes after about 5-20mins of gameplay.

I have reformatted my hard drive, re-installed XP, updated all drivers possible and can play games fine offline. Its just online play that my comp freezes. My PC temps are normal (see below) and i have got plenty of air cooling as well. I tried swapping my sound card with the onboard sound card, but it made no difference. I can stay connected to the internet perfectly fine overnight, downloading etc. The only thing i have not yet swapped is my network card, which i will be doing tomorrow (using on board at the moment).

I have run memtest, 3dmark06, pcmark05 all with no problems. I ran world in conflict at max settings and payed it fine offline for 2 hours yesterday.

Anyone have a clue what the issue could be??

Processor Temperature : 32 °C
Processor Temperature (Core 1) : 45 °C
Processor Temperature (Core 2) : 44 °C
Mainboard Temperature : 40 °C
:
Hard Disk Temperature ST3320620AS : 33 °C
Hard Disk Temperature WDC WD2000JD-00HBB0 : 33 °C

specs:

Mainboard : Gigabyte 965P-DQ6
Chipset : Intel P965
Processor : Intel Core 2 Duo E6600 @ 2400 MHz
Physical Memory : 3072 MB DDR2-800Mhz (2x512Mb corsair XMS2, 2 x 1gig Mushkin)
Video Card : ATI Technologies Inc Radeon X1950 Series
Hard Disk : ST3320620AS (320 GB)
Hard Disk : WDC (200 GB)
DVD-Rom Drive : HL-DT-ST DVDRAM GSA-H10N SCSI CdRom Device
DVD-Rom Drive : BI5465M PEB902S SCSI CdRom Device
Monitor Type : LG Electronics L226W - 23 inches
Network Card : Marvell Semiconductor (Was: Galileo Technology Ltd) Yukon 88E8053 PCI-E Gigabit Ethernet Controller (Copper)
Operating System : Microsoft Windows XP Professional 5.01.2600 Service Pack 2
DirectX : Version 9.0c (May 2007)
Sound Card: Sound blaster Audigy 2 ZS

 

[engiNURD]

GPU temps?

Can you loop 3Dmark06 a few times?

How long did you run memtest?

 

[thrawn86]

wouldn't he be seeing tearing and snow before freezing if his gpu was that hot?

also, voltage rails. watch them while running prime95.

 

[Dangman]

What firewall are you using?

I'm having the same problem as well with BF2. Each time BF2 freezes, Comodo Firewall says that I'm under DDOS attack.

OH and what ISP do you have? Is anybody you know, who play those online games and have the same ISP as you, having the same problem?

 

[AjAx30]

hey... ran memtest overnight, said no problems.. not using a firewall at the mo, was the first thing i took off.. I use a popular ISP, no problems experienced by other guys on it..

as i said, i can play games fine offline, its just online, so i doubt its my gfx card.... max temp i have seen it at was 70deg centigrade.

i also have tried a new network card, but the problem still occurs