GuyFaux

This happened to me a few days ago. Were you on IRC when your computer restarted and this installed?

If you googled Antivirus 2009, you'll learn that it's a self-cloning anti-virus (upgraded from its previous version, Antivirus 2008) that installs itself and bugs you incessantly to buy the full program.

This program automatically uninstalls your other anti-viruses. For me it also deleted my mIRC.exe file (though it left the rest of mIRC alone, which I was grateful for.)

This zip file is part of a multidisk zip file. Please insert the last disk of the set.

This is what I did. I downloaded AVG 8.0, which is a good antivirus. When it finished installing, I chose not to restart my computer (because it will be deleted if you do). Run an AVG scan and let it finish, then clean up the files it found.

This uninstalled both Antivirus 2009 and got rid of the red X in the corner.

(Also please note that even after I got rid of it, my computer ran very, very slowly. It even caused FireFox to take a full 2 minutes or more to start up. I had to reformat my computer to get rid of all the problems it caused.)