Thank you for your report. To help debug the situation, which version of Ubuntu are you running?
** Changed in: gnome-screensaver (Ubuntu) Status: Unconfirmed => Needs Info -- Locked session becomes temporarily visible during user switch https://launchpad.net/bugs/71619 -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs