package openjdk-6-jre-headless 6b22-1.10.4-0ubuntu1~11.04.2 failed to install/upgrade: subprocess installed post-installation script returned error exit status 2

This error occurs after installing updates from Update Manager

ProblemType: Package
DistroRelease: Ubuntu 11.04
Package: openjdk-6-jre-headless 6b22-1.10.4-0ubuntu1~11.04.2
ProcVersionSignature: Ubuntu 2.6.38-13.55-generic 2.6.38.8
Uname: Linux 2.6.38-13-generic x86_64
AptOrdering:
 libnspr4-0d: Install
 flashplugin-installer: Install
 openjdk-6-jre-headless: Configure
 libnspr4-0d: Configure
 flashplugin-installer: Configure
Architecture: amd64
Date: Thu Feb 16 09:00:58 2012
ErrorMessage: subprocess installed post-installation script returned error exit status 2
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1)
SourcePackage: openjdk-6
Title: package openjdk-6-jre-headless 6b22-1.10.4-0ubuntu1~11.04.2 failed to install/upgrade: subprocess installed post-installation script returned error exit status 2
UpgradeStatus: No upgrade log present (probably fresh install)