ScreenSaver doesn't work

["Petersen, Brandon" <brandon hastings edu>]

    I've been trying to get the screen saver to turn on, by going to the
Gnome Control Panel.  Right now, I have the Control Panel set to 'Random
Screensaver' which starts after 5 minutes of inactivity.  The screensaver
never comes on, instead the default 'blank screen' comes on after 15 or 20
minutes.

    I've also been wanting to lock the screen, by going to the menu on the
Gnome panel that gives me that option.  But when I choose that option,
nothing happens.

    Is there something that I can do to fix this?

							Brandon P.