package mythbuntu-lightdm-theme 0.9 failed to install/upgrade: ErrorMessage: subprocess new pre-installation script returned error exit status 1

[mjunker]

Version 12.04 (precise) (32-Bit)
Kernel Linux 3.2.0-16-generic-pae
GNOME 3.3.90

Speicher: 2048 MB
CPU: Intel® Atom™ CPU N270 @ 1.60GHz × 2

bug during particulary system-upgrade with update-manager

ProblemType: Package
DistroRelease: Ubuntu 12.04
Package: mythbuntu-lightdm-theme 0.9
ProcVersionSignature: Ubuntu 3.2.0-16.25-generic-pae 3.2.6
Uname: Linux 3.2.0-16-generic-pae i686
ApportVersion: 1.93-0ubuntu2
Architecture: i386
Date: Thu Mar 1 09:44:20 2012
ErrorMessage: ErrorMessage: subprocess new pre-installation script returned error exit status 1
PackageArchitecture: all
SourcePackage: mythbuntu-lightdm-theme
Title: package mythbuntu-lightdm-theme 0.9 failed to install/upgrade: ErrorMessage: subprocess new pre-installation script returned error exit status 1
UpgradeStatus: Upgraded to precise on 2012-03-01 (0 days ago)