Do you still have all your other profile data like saved password and extensions? ---- Problems with bookmarks and history not working properly can be caused by a corrupted places.sqlite database file. *http://kb.mozillazine.org/Bookmarks_history_and_toolbar_buttons_not_working_-_Firefox *https://support.mozilla.org/kb/Bookmarks+not+saved#w_fix-the-bookmarks-file You can try to check and repair the places database with this extension: *https://addons.mozilla.org/firefox/addon/places-maintenance/ *https://support.mozilla.org/kb/Lost+Bookmarks

No, I do not have all your other profile data saved password and extensions.

Sounds that you may have switched to another profile folder. *[http://www.google.com/search?hl=en&ie=UTF-8&q=cache:http://kb.mozillazine.org/Recovering_a_missing_profile http://kb.mozillazine.org/Recovering_a_missing_profile] *https://support.mozilla.org/kb/Recovering+important+data+from+an+old+profile