Never changed anything, it was working last night at 11:30 PM when I shut it down. I am running XP and I dodn't have any other security running I have never made any changes to avast from the standard settings that came with it when I first downloaded it last week-end either. I only have 4 tabs on the left of the console they are, Summary, Scan Computer, Realtime Shields, and Maintenance. I am thinking it is just a firewall setting but I don't have that tab.