I thought Firefox had a bug because it crashed and froze the computer. So how did I fix the problem? Merely by deleting Temporary Files. After that it was working fine again. It started out loading pages slow and became gradually more sluggish, and I kept thinking it was Firefox. I switched to a different browser, and the same thing happened. So how do you delete Temporary Files? C:\Documents and Settings\Name-of-User\Local Settings\Temp... Delete the Temporary Files at that location. I wish Firefox would incorporate a Menu Selection to do that for you.