I was looking for some freeware to play Chess on, and downloaded a 3D Chess game promising to be freeware. However, I didn't like the ridiculously stupid AI (who the heck moves King Rook back and forth like that??) so I uninstalled it. However, I soon got a s#!t load of popups from AVG. After that, I couldn't connect.
OK, I'm smart enough to isolate and kill it. HijackThis found a O10 that said something about killing the Internet connection because a .dll file in the program's directory was removed. Sure enough, removing it restored my connection.
However, this begs the question: Am I still infected? Attached is Exhibit A - A post-removal HJT log.