No internet connection on Vista64 with avast on; res://ieframe.dll/dnserror.htm#

I just purchased 2 licenses for Avast Pro. One installed on a PC with XP pro, one installed on a PC with Windows Vista Ultimate 64bit. On XP pro everything works fine. On Windows Vista 64 I cannot access the internet whenever I have the resident protection of avast pro turned on. I tried on IE7 and Firefox, but with the same result. On IE7 the error “res://ieframe.dll/dnserror.htm#” appears whenever trying to open any page. The network diagnose shows no problems.

On both systems and with both different browsers I have got a problem with contacting the avast support website. I can open the support website once but as soon as I enter my details and log in, a blank page appears and I cannot access any support. Cleaning the cookies let’s me see the support site again but once I want to log in to send a support ticket I get a blank page again.

Anyone can help with these issues?

Hi mechsner!

do or did you have any other security software installed on your pcs?
(antivirus, firewall,…) (especially norton…)

are your systems up-to-date? (all service packs)

how are you connected to the internet? (dial-up,…)

yours
onlysomeone