Bingo ! Thank you very much Chris ! You were right: it was a local configuration issue. But I'd say consolekit seems overly sensitive and I'm not sure its behavior is really legitimate. Here is what /usr/sbin/console-kit-daemon --debug tells me (in /var/log/daemon.log): Nov 15 10:50:07 xyz console-kit-daemon[940]: WARNING: Unable to load seats from file /etc/ConsoleKit/seats.d/.svn: Not a regular file So, indeed, I started (shortly before the upgrade to karmic but I didn't notice that bug in jaunty) to have my /etc managed by subversion, and this caused console-kit to fall apart. By moving the .svn directory away, I confirm that the system now behaves as expected (gdm drums that I will promptly shut off, login melody that I will promptly turn off too, mount usb stick, system shutdown, etc.). However, I am not sure that having console-kit-daemon half-fail (and "half" only) because it sees some directory where it expects only regular files, is a perfectly nice behavior. I'd rather it fails completely or simply ignores non-regular files. Anyway, I should have noticed that problem before, as it has always been reported to daemon.log but I did not notice it (looking for the wrong log files and/or log message prefixes). Thank you very much for your very valuable help !
** Package changed: policykit-1 (Ubuntu) => consolekit (Ubuntu) ** Changed in: consolekit (Ubuntu) Status: Incomplete => Fix Released -- cannot mount usb volumes: "Not authorized", after upgrade to Karmic https://bugs.launchpad.net/bugs/478274 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs