https://bugzilla.redhat.com/attachment.cgi?id=305465
Patch by Tim Waugh. Already commited upstream.

diff -up system-config-keyboard-1.2.15/src/keyboard_gui.py.traceback system-config-keyboard-1.2.15/src/keyboard_gui.py
--- system-config-keyboard-1.2.15/src/keyboard_gui.py.traceback	2008-05-15 11:41:30.000000000 +0100
+++ system-config-keyboard-1.2.15/src/keyboard_gui.py	2008-05-15 11:43:11.000000000 +0100
@@ -133,8 +133,8 @@ class moduleClass(Module):
     def createScreen(self, defaultByLang=None, kbd=None):
         if kbd is None:
             kbd = keyboard.Keyboard()
-        else:
-            self.kbd = kbd
+
+        self.kbd = kbd
 
         self.vbox = gtk.VBox()
         self.vbox.set_spacing(10)