I have Norton for both.. and I'll bet that's what it is. What do I do about it, other than replace it, which I will do in a few days as it's running out.
I'll get Zonealarm and Grisoft I guess.
Norton 2004 or better is pretty good I hear.
Zonealarm has a really nice firewall.
Haven't had such trouble myself, but I'm not using a graphics thing while posting.
Norton sucks up resources something awful if you keep it running in the background.