What is the output from dpkg-query -s gnome-screensaver | grep ^Version
? After you are unable to lock the screen (whereas earlier in the same session you'd been able to), does your ~/.xsession-errors have any information from gnome-screensaver? If so, please post your .xsession- errors. What screensaver/hack do you have selected? -- Can't lock desktop. https://launchpad.net/bugs/57160 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
