package lxdm 0.2.0-0ubuntu1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 2

Binary package hint: lxdm

i've been trying to uninstall this sucker for a while. Keeps on failing...

$ sudo apt-get remove lxdm
[sudo] password for harvest:
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages will be REMOVED:
  lxdm
0 upgraded, 0 newly installed, 1 to remove and 0 not upgraded.
1 not fully installed or removed.
After this operation, 930kB disk space will be freed.
Do you want to continue [Y/n]?
(Reading database ... 323656 files and directories currently installed.)
Removing lxdm ...
update-alternatives: error: readlink(/etc/alternatives/lxdm.conf) failed: Invalid argument
dpkg: error processing lxdm (--remove):
 subprocess installed pre-removal script returned error exit status 2
Errors were encountered while processing:
 lxdm
E: Sub-process /usr/bin/dpkg returned an error code (1)

$ lsb_release -rd
Description: Ubuntu maverick (development branch)
Release: 10.10

$ apt-cache policy lxdm
lxdm:
  Installed: 0.2.0-0ubuntu1
  Candidate: 0.2.0-0ubuntu1
  Version table:
 *** 0.2.0-0ubuntu1 0
        500 http://au.archive.ubuntu.com/ubuntu/ maverick/universe i386 Packages
        100 /var/lib/dpkg/status

ProblemType: Package
DistroRelease: Ubuntu 10.10
Package: lxdm 0.2.0-0ubuntu1
ProcVersionSignature: Ubuntu 2.6.35-21.31-generic 2.6.35.4
Uname: Linux 2.6.35-21-generic i686
AptOrdering: lxdm: Configure
Architecture: i386
Date: Thu Sep 16 07:28:40 2010
ErrorMessage: subprocess installed post-installation script returned error exit status 2
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release i386 (20100429)
SourcePackage: lxdm
Title: package lxdm 0.2.0-0ubuntu1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 2