AntiVirus Progs Don't update + Cannot access sites Symantec, Sophos, Mcafee.

[mattofelki]

I am in a very strange situation. I suppose my computer was infected with a sort of worm or virus which I probably managed to eliminate with a couple of suggestions from this cool site. But I guess the consequence of the removed infection still remain. I have an always online ADSL connection and all my other internet services work just fine. Emails work, all other sites are normally accessable. The problem is just with these three sites: Symantec.com, Mcafee.com and Sophos.com. Explorer demands password for these sites. I have installed each program seperatly: Norton AntiVirus, Mcafee VirusScan, Sophos and AVG, but none of them are able to get the updated virus list with the live update. The error states that probably internet connection is not established, although I am online the whole time. Does anyone have a clue what's going on? Please help me..

Matjaz