Quote: "Norton + Aim = "hack me" post-it note on back."
I've never had any problems running Norton and the standard AIM client. I just don't download every file somebody sends me.
AVG is hardly better than Norton. Go research the comparitive tests. Norton works great, but can be a resource hog. Plus, I do hate the newer versions that for some reason need 2 tray icons and runs several processes. I had Norton 2000 but I lost my CD. I recently got Symantec instead, which is different from Norton. Its more of their corporate AV edition, less 'extra' crap installed with it.
You probably just have an AIM virus. Try a different client, such as
Sciurus.