Thanks for the quick reply. It seems it's an Ubuntu patch that adds details to match the authentication dialog with its parent window. This is no longer allowed by polkitd. I can't find this patch in the repositories, but it really seems it's applied, and we need to get rid of it.
** Bug watch added: GNOME Bug Tracker #596260 https://bugzilla.gnome.org/show_bug.cgi?id=596260 ** Also affects: policykit-1-gnome via https://bugzilla.gnome.org/show_bug.cgi?id=596260 Importance: Unknown Status: Unknown -- You received this bug notification because you are a member of Registry Administrators, which is the registrant for PolicyKit GNOME. https://bugs.launchpad.net/bugs/685655 Title: PolicyKit authentication error: Only trusted callers (e.g. uid 0) can use CheckAuthorization() and pass details _______________________________________________ Mailing list: https://launchpad.net/~registry Post to : registry@lists.launchpad.net Unsubscribe : https://launchpad.net/~registry More help : https://help.launchpad.net/ListHelp