You are not kidding.....
you would not believe how much Norton discovered while running cleanup after AVG on a system I worked on last week. These were not false positives.
AVG misses a lot.
I'll endure the resource hogging and keep the better protection.
You can expect to have some problems when using beta browsers and Firefox is a prime example.
I had the same exact problem, except the site that Firefox would not go to was www.photobucket.com. It was strange because I has just finished setting up Firefox to auto logon on that site. Now it wouldn't even go to the site.
After uninstalling and reinstalling about a million versions to no avail, it turned out to be one of the "so-called" tweaks.
It was "browser.cache.memory.enable". Re-enabling this solved my problem, but I got rid of Firefox anyway.
So much for beta browsers.