Comment 33 for bug 122549

With compositing enabled in xfce, gnome-screensaver fails to keep the screen black.
The result then looks like http://rtg.optirom.info/photos/gnome-screensaver-disclosure.jpg (actual photo of the screen, sorry for the quality).
The screen becomes black at first and then the password input prompt is then displayed along with all the screen. The image is still but the update can be easily update by leaving a message.