Webuser Forums: Accessing Certain Site Problems

I am having problems maintaining a connection with a particular website, (everything else seems is fine, for now!!), I can log in to it, view the first page, then when I try to access one of its threads, none of the links or thumbnails load. If I try to reload the page, it stalls and I eventually get the dreaded "The Connection Was Reset" page.
I am a Mod on this site and on the few occasions I have managed to gain any time at all on it, I have checked and found that the problem must lie at my end.
This problem has only arisen within the past few weeks and it is driving me round the bend!!
Here are some of my specs:

System : FUJITSU SIEMENS AMILO Pro Edition V3505

Processor
Model : Genuine Intel(R) CPU T2050 @ 1.60GHz

Operating System(s)
Windows System : Microsoft Windows XP (2002) Professional 5.01.2600 (Service Pack 2)

Network Services
Adapter : Intel(R) PRO/Wireless 3945ABG Network Connection

Anti Virus & Firewall
Eset Smart Security version 3.0.642.0

Anyone any clues?