Binary package “gnome-screensaver” in ubuntu precise

GNOME screen saver and locker

 gnome-screensaver is a screen saver and locker that aims to have simple,
 sane and secure defaults, and be well integrated with the GNOME desktop.
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 It is designed to support, among other things:
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  * the ability to lock down configuration settings
  * translation into other languages
  * user switching