Gnome 2.22.3 doesn't receive keyboard

["Paulo J. Matos" <pocmatos gmail com>]

Hi all,

Everything was ok until I decided to change my keyboard layout to
Apple / Macbook. Not only it didn't change but now, no matter which
layout I choose, the keyboard doesn't work!!! :(

When I try to change the layout I get:
"Error activating XKB config.

X Server version data:
The X.Org Foundation
10502000"

and asks to provide the following info:
$ xprop -root | grep XKB
_XKB_RULES_NAMES(STRING) = "xorg", "evdev", "uk", "", "numpad:mac"

$ gconftool-2 -R /desktop/gnome/peripherals/keyboard/kbd
 layouts = []
 model = macbook78
 overrideSettings = true
 options = []

What might be the problem? Or at least how can I go to 'factory
settings' so that the keyboard at least works...???

-- 
Paulo Jorge Matos - pocmatos at gmail.com
Webpage: http://www.personal.soton.ac.uk/pocm