XF86ScreenSaver button is not overridden if set to custom action

[Serhiy]

Steps to reproduce:
1. Launch gnome-control-center
2. Go to Keyboard - Shortcuts - Custom shortcuts
3. Add any command and set XF86ScreenSaver as shortcut button
4. Press XF86ScreenSaver

Expected result:
Custom command being run.

Actual result:
Custom command runs and the session is being locked.

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: gnome-control-center 1:3.2.2-0ubuntu1
ProcVersionSignature: Ubuntu 3.0.0-14.23-generic 3.0.9
Uname: Linux 3.0.0-14-generic i686
ApportVersion: 1.23-0ubuntu4
Architecture: i386
Date: Thu Dec 8 22:26:15 2011
SourcePackage: gnome-control-center
UpgradeStatus: No upgrade log present (probably fresh install)
usr_lib_gnome-control-center:
 deja-dup 20.1-0ubuntu0.2
 gnome-bluetooth 3.2.0-0ubuntu2
 indicator-datetime 0.3.1-0ubuntu1.1

[Sebastien Bacher (seb128)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. The issue you are reporting is an upstream one and it would be nice if somebody having it could send the bug to the developers of the software by following the instructions at https://wiki.ubuntu.com/Bugs/Upstream/GNOME. If you have done so, please tell us the number of the upstream bug (or the link), so we can add a bugwatch that will inform us about its status. Thanks in advance.