I've noticed this behaviour also. I'll leave my PC for sometime and come back. I can use it for a very short time then I'm locked out. Marked as "Confirmed"
** Changed in: gnome-screensaver (Ubuntu) Status: New => Confirmed -- Screen locking issue https://bugs.launchpad.net/bugs/597521 You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-screensaver in ubuntu. -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs