Bug#363021: xserver-xorg: x-window fails to upgrade and fails to start

["System Administrator - xtenbit.com" <sulaiman@xtenbit.com>]

Package: xserver-xorg
Version: 6.9.0.dfsg.1-6
Severity: important

*** Please type your report below this line
The following packages have unmet dependencies: x-window-system-core: Depends: xserver-xorg
 xserver-xorg failed to preconfigure, with exit status 64


-- System Information:
Debian Release: testing/unstable
  APT prefers unstable
  APT policy: (500, 'unstable'), (500, 'testing')
Architecture: i386 (i686)
Shell:  /bin/sh linked to /bin/bash
Kernel: Linux 2.6.14-2-k7
Locale: LANG=C, LC_CTYPE=C (charmap=ANSI_X3.4-1968)

Versions of packages xserver-xorg depends on:
ii  debconf [debconf-2.0]         1.4.72     Debian configuration management sy
ii  libc6                         2.3.6-7    GNU C Library: Shared libraries
ii  libgcc1                       1:4.1.0-1  GCC support library
ii  libxau6                       1:1.0.0-2  X11 authorisation library
ii  libxdmcp6                     1:1.0.0-3  X11 Display Manager Control Protoc
pn  xserver-common                <none>     (no description available)
ii  zlib1g                        1:1.2.3-11 compression library - runtime

Versions of packages xserver-xorg recommends:
ii  discover                  2.0.7-2.1      hardware identification system
ii  laptop-detect             0.12.1         attempt to detect a laptop
ii  mdetect                   0.5.2.1        mouse device autodetection tool
ii  xlibs                     6.9.0.dfsg.1-6 X Window System client libraries m
ii  xresprobe                 0.4.23debian1  X Resolution Probe