AVG 2011 is causing users a lot of problems
Just removed it for one of my clients this afternoon (and installed MSE).
It was producing weird error messages and not updating.
The uninstall failed with a meaningless message.
The AVG Removal Tool "hung" running endlessly with 100% CPU!
And it was the same after a reboot, so I terminated it all "with extreme prejudice" and lots of manual deletions.