After the last update to policykit-1-gnome 0105-1ubuntu3.1, nothing better. Concerning bugs around policykit-1-gnome, I hoppened a bug report, if more users are affected by the xsession-errors mentionned in #6, please let it know here too:
https://bugs.launchpad.net/ubuntu/+source/policykit-1-gnome/+bug/1000679 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/976638 Title: pkexec does not find any authentication agent To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/policykit-1/+bug/976638/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs