I lost all my history, bookmarks, and cookies on Firefox, with my OS being Ubuntu 12.04. I can't save new bookmarks, and my history isn't being created by visiting sites. I can't even alt+left or click a left arrow to go back a page (I have to crtl+click the link instead). Additionally, my passwords were still saved, but it keeps the same passwords, even when I try to change the saved password to something different (and correct). Even when I click "stay logged into this site" it doesn't keep me logged in when I restart the browser, so cookies aren't being saved anyway.
Bookmarks