I had a lot of problems with my Internet Explorer at work today. One (or more) windows pop up once I open any site. I uninstalled literally everything and stopped all the processed by they kept popping up, besides, I lost my Microsft outlook during the removal process! I think I'll have to reinstall windows as soon as finish this part of the project. I use Eudora as my mail application for now...
Speaking of replacing Microsoft Outlook by Eudora, you might want to take a look at a bunch of replacements for Microsoft products! (Link via Iranetsol Blog)