Use the following to see if you have more than one profile or your lost bookmarks in the bookmarkbackups folder.

Type about:support into the location bar the click on "Open Containing Folder" that will take you to your current profile. The bookmarkbackups folder has 5 backups (.json files) any of which can be restored with Firefox up through restore bookmarks.

but if you created a new folder see ...next...

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Lost passwords, bookmarks, is a profile issue. Sounds like you created a new profile instead of using your existing profile.

Open your profile folder and go up one level to see if you have multiple profiles ...

  HELP (Alt+H) --> Troubleshooting information... --> "Open Containing Folder" (or type about:support into the location bar then click on "Open Containing Folder")

note the filename, then go up one level to see if you have additional profile folders.

Check the dates of places.sqlite (new in Fx3) for update date just before you went to Fx6 Since it is updated each time you close your session that would be a good place to check.

If you find one then note its filename (the profile name is part of the filename) and then start the Firefox Profile Manager and open with that profile.

To prevent the problem in the future don't let Firefox start up for you after downloading and installing a new version. Instead exit the install at that last point, and restart Firefox in your normal manner.

Lost bookmarks - MozillaZine Knowledge Base

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

Please mark "Solved" one answer that will best help others with a similar problem -- hope this was it.

thanks but have only got 1 backup file which was timed after I installed and reinstalled everything. Wife now going to kill me as lost her favourites. thanks again