If you have problems with updating then easiest is to download the full version and uninstall the currently installed version. You may need to remove the Firefox program folder to do a clean install of the new version.

• Download a fresh Firefox copy and save the file to the desktop.
• Firefox 4.0.x: http://www.mozilla.com/en-US/firefox/all.html
• Firefox 3.6.x: http://www.mozilla.com/en-US/firefox/all-older.html

• Uninstall your current Firefox version and remove the Firefox program folder before installing that copy of the Firefox installer.
• Do not remove personal data if you uninstall the current version.
• It is important to delete the Firefox program folder to remove all the files and make sure that there are no problems with files that were leftover after uninstalling.

Your bookmarks and other profile data are stored elsewhere in the Firefox Profile Folder and won't be affected by a reinstall, but make sure that you do not select to remove personal data if you uninstall Firefox.

Thank you for your help. I did uninstall Firefox and then delete the Firefox program folder yesterday. I figure there must still be something left, but I've searched everywhere and I can't find anything that says Firefox or Mozilla. Don't know where else to check.

I downloaded revo uninstaller and that found more things and deleted them and I'm back baby!

Thanks again