I don't know if your Firefox is automagically generating profiles for each new installation, and if it is I don't know why or how to stop it from doing that, sorry :( Anyway, I thought it wouldn't hurt to see there.
(verberg) Houdt uw Postbus schoon door belangrijke berichten te archiveren en regelmatig de Verwijder-alle-berichtenknop in uw instellingen. (pauloaguia) (laat alle tips zien)