package libreoffice-common 1:3.5.0~beta2-2ubuntu2 failed to install/upgrade: ErrorMessage: subprocess installed post-installation script returned error exit status 134

upgrade 11.10 to 12.04 alpha
after restaring , unity bar and status bar not displayed

ProblemType: Package
DistroRelease: Ubuntu 12.04
Package: libreoffice-common 1:3.5.0~beta2-2ubuntu2
ProcVersionSignature: Ubuntu 3.2.0-8.15-generic 3.2.0
Uname: Linux 3.2.0-8-generic i686
NonfreeKernelModules: nvidia
ApportVersion: 1.90-0ubuntu1
Architecture: i386
Date: Sat Jan 14 03:49:52 2012
ErrorMessage: ErrorMessage: subprocess installed post-installation script returned error exit status 134
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release i386 (20111012)
PackageArchitecture: all
SourcePackage: libreoffice
Title: package libreoffice-common 1:3.5.0~beta2-2ubuntu2 failed to install/upgrade: ErrorMessage: subprocess installed post-installation script returned error exit status 134
UpgradeStatus: Upgraded to precise on 2012-01-13 (0 days ago)