Description of problem:
If I enable the 'Fast Switch User' option to gnome-screensaver via gconf, and
then lock my screen, moving the mouse or pressing the keyboard results in a
frozen unlock dialog (the dialog begins to appear, but locks up before any label
or button is displayed and doesn't accept input; this may be the same symptoms
as in https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=186444). 

After switching to a virtual terminal and manually killing gnome-screensaver,
then switching back to X, I notice on the terminal that I launched the
gnome-screensaver daemon from the following error message:

(gnome-screensaver-dialog:30087): Screensaver-Fast-User-Switch-CRITICAL **:
Could not parse GDM configuration file `/etc/X11/gdm/gdm.conf': No such file or
directory

On Fedora Core 5, there is no /etc/X11/gdm/gdm.conf (or even an /etc/X11/gdm
directory, since it's in /etc/gdm now, and uses a combination of
/usr/share/gdm/defaults.conf and /etc/gdm/custom.conf).

I haven't looked into the design of gnome-screensaver or anything, but it seems
like a bad idea to depend on another component's config file location/format.
Especially when simply running 'gdmflexiserver' from the command line seems to
do exactly what gnome-screensaver should be doing (starting a new gdm login window).

Version-Release number of selected component (if applicable):
gnome-screensaver-2.14.1-1.fc5.1

How reproducible:
Always

Steps to Reproduce:
1. In gconf, enable the key /apps/gnome-screensaver/user_switch_enabled
2. Activate gnome-screensaver.
3. Attempt to unlock the screensaver.
  
Actual results:
Unlock dialog freezes up, have to manually kill the gnome-screensaver process.
Error from gnome-screensaver indicates it was trying to parse the non-existent
/etc/X11/gdm/gdm.conf.

Expected results:
Unlock dialog doesn't freeze up, has a button to start a new login window (e.g.
as gdmflexiserver does).

Additional info: