i too noticed this bug in one of my friend system running Ubuntu 12.04
(amd64). I went to Console mode and killed gnome-screensaver process,
switched back to gui mode and got the session as it is. Then i tried
with xscreensaver. On locking the screen i was able to see the
authentication dialog of x
This is the output of running the gnome-screensaver in debug mode for 2
minutes. As it is visible that i didn't even tried to give password then too it
is showing continuous authentication failure.
Same is the case with xscreensaver.
** Attachment added: "gnomelog"
https://bugs.launchpad.net
