Bug#437023: xserver-xorg-input-kbd: X does not start if I upgrade the package

[Mikko Heimola <mikko.heimola@iki.fi>]

Package: xserver-xorg-input-kbd
Version: 1:1.1.0-4
Severity: critical
Justification: breaks the whole system

If I upgrade this package to the testing/unstable version, X refuses to start. 
Downgrading back to 1:1.1.0-4 helps. 

Excerpts from /var/log/Xorg.0.log: 

(**) |-->Input Device "Generic Keyboard"
(==) Keyboard: CustomKeycode disabled
(II) LoadModule: "keyboard"
(WW) Warning, couldn't open module keyboard
(II) UnloadModule: "keyboard"
(EE) Failed to load module "keyboard" (module does not exist, 0)
(EE) No Input driver matching `keyboard'
No core keyboard
Fatal server error:
failed to initialize core devices

My /etc/X11/xorg.conf has:

Section "InputDevice"
        Identifier      "Generic Keyboard"
        Driver          "keyboard"
        Option          "CoreKeyboard"
        Option          "XkbRules"      "xorg"
        Option          "XkbModel"      "pc105"
        Option          "XkbLayout"     "fi"
EndSection

-- System Information:
Debian Release: lenny/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (500, 'stable')
Architecture: i386 (i686)

Kernel: Linux 2.6.17-1-486
Locale: LANG=fi_FI@euro, LC_CTYPE=fi_FI@euro (charmap=ISO-8859-15)
Shell: /bin/sh linked to /bin/bash

Versions of packages xserver-xorg-input-kbd depends on:
ii  libc6                   2.5-11           GNU C Library: Shared libraries
ii  xserver-xorg-core       2:1.3.0.0.dfsg-6 X.Org X server -- core server

xserver-xorg-input-kbd recommends no packages.

-- no debconf information