Lost all my book marks upgrading to firefox 4, is there any way to rerteve them??

If you used the delete all data, or whatever the wording, because you did an uninstall then you will need luck and a file recovery program. It sometimes works out [/questions/787020#answer-141048 see]. If you did a standard upgrade Firefox tries to save all such important data. It could also have helped if you had made separate [[Backing up and restoring bookmarks|manual backups]]. Normally bookmarks are not lost, or Firefox has kept some auto backups from which you may be able to restore most of your * [[Lost Bookmarks]] <-- click the link for instructions ---