package apport 1.20.1-0ubuntu4 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1

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Binary package hint: apport

i tried to update my software

ProblemType: Package
DistroRelease: Ubuntu 11.04
Package: apport 1.20.1-0ubuntu4
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
Uname: Linux 2.6.38-8-generic i686
NonfreeKernelModules: wl
ApportLog:

Architecture: i386
CrashReports:
 600:1000:1000:1089879:2011-04-19 23:03:17.742587000 +0100:2011-04-20 18:29:06.027061768 +0100:/var/crash/_usr_lib_policykit-1-gnome_polkit-gnome-authentication-agent-1.1000.crash
 600:0:0:170698:2011-04-21 00:22:26.491589000 +0100:2011-04-21 00:22:54.543723457 +0100:/var/crash/apport.0.crash
 600:0:0:837698:2011-04-19 08:10:13.222148000 +0100:2011-04-19 08:10:14.222148000 +0100:/var/crash/_sbin_plymouthd.0.crash
Date: Thu Apr 21 00:22:27 2011
ErrorMessage: subprocess installed post-installation script returned error exit status 1
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Beta i386 (20110413)
PackageArchitecture: all
SourcePackage: apport
Title: package apport 1.20.1-0ubuntu4 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1
UpgradeStatus: No upgrade log present (probably fresh install)