ejabberd-2.1.13-4 from F20 has a problem in its .rules polkit file, from /var/log/secure: Oct 25 23:30:11 lxorgfr polkitd[578]: /usr/share/polkit-1/rules.d/51-ejabberdctl.rules:2: TypeError: action.lookup(...) is undefined Oct 25 23:30:11 lxorgfr polkitd[578]: /usr/share/polkit-1/rules.d/51-ejabberdctl.rules:2: TypeError: action.lookup(...) is undefined according to polkit doc, it is possible to use action.lookup("program") instead of action.lookup("command_line") ?
Fabrice, please wait for a couple of hours and recheck - I've just submitted a new build which should fix that. *** This bug has been marked as a duplicate of bug 1009408 ***