What do I do? My firewall keeps blocking port scans and afterwards my internet speed goes down to 0.10mbps...that's 10bytes! I'm on "up to" 30mbps Virgin Media although speeds fluctuate wildly and average is under 20 normally. It was a struggle just to post this in here, it's like the old days of 56k dial-up again! I have BitDefender Total Security 2014.