there is a bug in menu-xdg that prevents the .menu file that supresses xscreensaver from being shown in the menu, from being read, if that bug is solved the entry for xscreensaver wont appear anymore as long as gnome-screensaver is installed.
-- Screensavers option shown twice in System-Preferences menu https://launchpad.net/bugs/32385 -- desktop-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
