Which Mac OS X version and which Firefox version are you currently using?

• http://kb.mozillazine.org/Lost_bookmarks

os 10.8.2 Firefox 17.0.1

Did you find a places.sqlite file in the profile folder or JSON backups in the bookmarkbackups folder?

• /Users/<user>/Library/Application Support/Firefox/Profiles/<profile>/

In Mac OS X v10.7 and later, the $HOME/Library folder is a hidden folder.

Open Finder and use one of these:

• Go > Go To Folder (Shift-Command-G) and in the dialog type: ~/Library
• Open the "Go" menu and hold down the Option key to make the Library appear

• http://kb2.adobe.com/cps/909/cpsid_90947.html Access hidden user library files