The name in the menu is "settings", in english ; it should be "paramètres" in french. This problem is visible in the menu only. The translation in the submenu and in the titlebar is correct. (OS : Mageia 3 beta 2 DVD 64 bits)
Missing translations aren't handled in bugzilla, it'd be best if you get in touch with the french translation team, e.g. via the mailing list or via transifex: http://docs.xfce.org/contribute/translate/start