I just had Avast! free and that was always up to date, I wanted to trial the Internet Security before buying it, so I've always had Avast! on my Machine.
My OS is Windows 7 Home Premium 64 bit SP1. (I thought it had updated to SP2 but apparently it didn't...)
I have the Avast Internet Security trial re-installed (clean install this time) at the moment, I figured I could deal with it for a couple more day while trying to get the issue resolved, if I can't than I'll have to try a different software.
At first it was an upgrade but when I noticed the problem I thought I'd give it a few day before trying anything, upon waiting and nothing happening I done a new clean install and the same issue still exists.