Using System Restore can cause your Firefox installation to get corrupted because not all files are restored (only files in a white-list), so be cautious with using System Restore.

• You may lose data in the profile folder like .js and .ini files.
• You may need to (re)install software that was affected.

Delete the Firefox program folder before reinstalling to be sure that all files get updated.

You can find the latest Firefox release in all languages and for all Operating Systems here:

• Firefox 14.0.x: http://www.mozilla.org/en-US/firefox/all.html

If the problem persists then try to create a new profile as a test to check if your current profile is causing the problems.

See "Basic Troubleshooting: Make a new profile":

• https://support.mozilla.org/kb/Basic+Troubleshooting#w_8-make-a-new-profile

There may be extensions and plugins installed by default in a new profile, so check that in "Tools > Add-ons > Extensions & Plugins" in case there are still problems.

If the new profile works then you can transfer some files from the old profile to that new profile, but be careful not to copy corrupted files.

See:

• http://kb.mozillazine.org/Transferring_data_to_a_new_profile_-_Firefox

This is making me crazy...I have uninstalled and reinstalled firefox a half a dozen times now. I uninstalled or at least I think I have Avira and installed AVG and then reinstalled firefox...same crap happens over and over again firefox just freezes up. I dont get it.