Is there a way to disable the Switch User option from a locked screen on Fedora 15? I've tried this way, but no luck, since gconf-editor has no effect.
How to disable Switch User option from Fedora 15
fedora;users;screen lock
I found 2 ways of doing this. Both involve XScreenSaver. Either deactivate or uninstall gnome-screensaver and start the XScreenSaver (install if needed), or switch to Xfce which is using it. XScreenSaver can easily be controlled and configured to disable the switch user feature.