Error activating XKB configuration

[Ham]

Binary package hint: xkeyboard-config

I accidentally deleted all the hidden files in my home directory. Then I logged into my user account and had to set everything up again. My default keyboard language is English UK and I tried to add German default. Then the following error message appeared:

Error activating XKB configuration.
It can happen under various circumstances:
- a bug in libxklavier library
- a bug in X server (xkbcomp, xmodmap utilities)
- X server with incompatible libxkbfile implementation

X server version data:
The X.Org Foundation
10400090

It is not possible to switch keyboard layouts with the defined keys.

 xprop -root | grep XKB
_XKB_RULES_NAMES_BACKUP(STRING) = "xorg", "pc105", "gb", "gb", "lv3:ralt_switch"
_XKB_RULES_NAMES(STRING) = "xorg", "pc105", "gb", "gb", "lv3:ralt_switch"

 gconftool-2 -R /desktop/gnome/peripherals/keyboard/kbd
 layouts = [gb gb,de]
 model =
 options = [lv3 lv3:ralt_switch,grp grp:alts_toggle]
 overrideSettings = true

lsb_release -rd
Description: Ubuntu 8.04.1
Release: 8.04

 apt-cache policy xkeyboard-config
xkeyboard-config:
  Installed: 1.1~cvs.20080104.1-1ubuntu7
  Candidate: 1.1~cvs.20080104.1-1ubuntu7
  Version table:
 *** 1.1~cvs.20080104.1-1ubuntu7 0
        500 http://de.archive.ubuntu.com hardy-proposed/main Packages
        100 /var/lib/dpkg/status
     1.1~cvs.20080104.1-1ubuntu6 0
        500 http://de.archive.ubuntu.com hardy/main Packages

[Bryce Harrington (bryce)]

[This is an automated message]

Hi ham-hamiltongross,

Please attach the output of `lspci -vvnn`, and attach your /var/log/Xorg.0.log file from after reproducing this issue. If you've made any customizations to your /etc/X11/xorg.conf please attach that as well.