Enhancement suggestion: dedicated X server for screen saver process

Currently the screen saver runs on the current X server, which means that an application grabbing the keyboard can prevent it from running properly. Running the screen saver in a dedicated X server would solve this.

ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: gnome-screensaver 3.6.0-0ubuntu1
ProcVersionSignature: Ubuntu 3.5.0-17.28-generic 3.5.5
Uname: Linux 3.5.0-17-generic x86_64
ApportVersion: 2.6.1-0ubuntu6
Architecture: amd64
Date: Mon Oct 29 18:31:04 2012
GnomeSessionIdleInhibited: No
GnomeSessionInhibitors: None
GsettingsGnomeSession:
 org.gnome.desktop.session idle-delay uint32 600
 org.gnome.desktop.session session-name 'ubuntu'
InstallationDate: Installed on 2012-05-23 (159 days ago)
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
MarkForUpload: True
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: gnome-screensaver
UpgradeStatus: Upgraded to quantal on 2012-09-26 (33 days ago)