I've removed a load of spyware and spyware infections from a friend's pc and while it seems to be running fine in most respects and I can reach most websites I can't access certain welll known AV and anti spyware sites.
I know this is a common thing for some spyware to do but I have run endless checks with Superantispyware (updated from a manual download on another pc), spybot (which uniquely, does update ok). AVG, Malware bytes, Hijackthis, ComboFix, SmitfraudFix and VundoFix. I can't find anymore infections and have also checked the HOSTS file for any entries. There doesn't seem to be any of these sites added in the Restriced sites area of IE. Firefox is also installed and is also blocked from the same sites...
I have run all these utilities in every user account.
I have also used LSPFIX and found nothing odd and reset the network settings with WinsockFix.
This is a machine running XP Home with SP2.
Any idea's where I can start looking for an answer?