Here you go...
I have a network that works with all other computers (XP Pro, XP Home, And W2k)
I have an XP system that will browse the internet for approx 8 minutes with FF and IE then page cannot be displayed.
I can still ping FQDN and IP addresses after 8 minutes.
I have run WinSockFix, Ad-Aware, Smitremove and Spybot. All are clean.
I am loosing hair over this one.