I have read many post and tried some tips, like be sure private browsing in not enabled, check privacy settings and so on. I Did the following : * Rename (or delete) cookies.sqlite (cookies.sqlite.old) and delete cookies.sqlite-journal and cookies.txt, if they exist, in the Firefox Profile Folder in case the file cookies.sqlite got corrupted. * Created a new clean profile and deleted the old * deleted all FF installations/folders and cleaned out most of the registry * Installed FF5 , FF6 : no luck Strange : When i close FF and restart, im still logged in. But when i restart PC, ALL cookies are gone/deleted! Any thoughts? I see in the 'Installed plugins' box some plugins, even when i deleted things en re-installed?