Could your /etc/shadow file possibly have the wrong permissions? Do a "ls -l /etc/shadow" and paste the result here, please.
** Changed in: gnome-screensaver (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-screensaver in Ubuntu. https://bugs.launchpad.net/bugs/774273 Title: unlock screen no longer works -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs