I have been spending the evening browsing all the other related posts and haven't been able to solve my problem. The problem started when Avast, today told me it needed to update itself so i let it do that. Since then, I restarted and have not been able to access the internet via Chrome or IE. I am running on Win7x64. The only solution seems to be disabling Web Shield and Mail Shield, after which both work. Enabling them again (which some suggested on other threads), blocks them again. I also tried one solution being starting up avast only after other processes have completed, via settings(on startup) which seemed to solve some other peoples' problems. This didn't help either. I only installed avast on Nov 27 and hadn't had any problems till now. I uninstalled, and then reinstalled (from my Nov 27 startup file) and the problem is still there.
One strange thing is, skype works as normal (not so strange) but really strange is that Facebook works in Chrome - the only website that works. I can't even access my wireless modem with the web shield on, but FB works!??
Any ideas would be most appreciated.
Thank you.