Extensions that may cause problems, disable if present

• McAfee Site Advisor
• PC DiskSuite (not sure if it is an extension)
• AVG Safe
• (information on |Problematic extensions)

One of these may fix problem

• http://kb.mozillazine.org/Corrupt_localstore.rdf
• create a bookmarks backup and restore it, may fix problems, I've never had to delete or rename my places.sqlite file yet, which would lose history, which is needed for the AwesomeBar to work properly or anything else that involves history.
  1. Ctrl+Shift+B to bring up Library List
  2. Import and Backup
  3. Backup to c:\temp\bookmarks-2011-08-14.json (or whatever current date is)
  4. Import and Backup
  5. Restore > choose file > c:\temp\bookmarks-2011-08-14.json
  6. see if problem is fixed
• https://support.mozilla.com/en-US/questions/851574

Troubleshooting extensions and themes

• https://support.mozilla.com/en-US/kb/Troubleshooting%20extensions%20and%20themes

Troubleshooting Plugins

• https://support.mozilla.com/en-US/kb/Troubleshooting%20plugins

Locked or Damaged places.sqlite

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

Check and tell if its working.

Another possible cause is a problem with the file places.sqlite that stores the bookmarks and the history.

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