With a closer look at gnome's bug #300832 i can say that one is not related with this one.
Try on your own: Open a terminal. Then lock down the desktop with this command:
gconftool -t bool -s /apps/panel/global/locked_down "true"
Open the context menu of the applications-menü top-left on your gnome desktop, see that you are able to launch the menu editor.
This should never be possible in a locked down environment.
From my point of view this bug's importance is not "Low", since i can not create locked down "kiosk" systems.
The bug still exists in gutsy.
With a closer look at gnome's bug #300832 i can say that one is not related with this one.
Try on your own: Open a terminal. Then lock down the desktop with this command: global/ locked_ down "true"
gconftool -t bool -s /apps/panel/
Open the context menu of the applications-menü top-left on your gnome desktop, see that you are able to launch the menu editor.
This should never be possible in a locked down environment.
From my point of view this bug's importance is not "Low", since i can not create locked down "kiosk" systems.