I’ve used Avast for several years with no problems. I got a new comp (Dell XPS410 w/Vista) last week and installed Avast. Afterwards I couldn’t bring up any web page, just a blank white screen…didn’t matter whether it was Firefox or IE Then when I disabled web shield everything worked as usual. Odd thing is, when I WAS blocked from webpages, my Yahoo IM was still connecting to the internet.
Windows firewall shouldn’t be blocking the avast WebShield to connect and scan the Internet traffic.
When you got the new computer, was there any antivirus installed in it? How did you uninstall it to install avast?
Can you try to install from the scratch?
If you disabled the Windows firewall and have not installed another, then you have no firewall. Your new computer is a sitting duck. On a new computer, the Windows firewall should not be disabled until another better firewall is ready to be installed (off-line, of course).
If you have been on-line more than 10 minutes without a firewall, it is very likely that your new computer has some type(s) of malware infection.
My firewall is in my router. On my other computers I run Norton, AVG, Avast for virus as well as Spyware blaster, Spybot and Adaware for spyware. Never had any problems. I set up this computer the same way, except no Norton, the wild card is it came with McAfee
Having two resident scanners installed is not recommended as rather than provide twice the protection it can cause conflicts that could leave you more vulnerable.