Ubuntu 13.04 from Software upgrade notification.
Towards end of upgrade got above error
ProblemType: Package
DistroRelease: Ubuntu 13.04
Package: libxml-sax-perl 0.99+dfsg-2ubuntu1
ProcVersionSignature: Ubuntu 3.8.0-33.48-generic 3.8.13.11
Uname: Linux 3.8.0-33-generic i686
ApportVersion: 2.9.2-0ubuntu8.5
Architecture: i386
Date: Mon Nov 11 10:16:41 2013
DuplicateSignature: package:libxml-sax-perl:0.99+dfsg-2ubuntu1:subprocess installed post-installation script returned error exit status 2
ErrorMessage: subprocess installed post-installation script returned error exit status 2
InstallationDate: Installed on 2012-06-26 (502 days ago)
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release i386 (20120423)
MarkForUpload: True
PackageArchitecture: all
SourcePackage: libxml-sax-perl
Title: package libxml-sax-perl 0.99+dfsg-2ubuntu1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 2
UpgradeStatus: Upgraded to raring on 2013-11-09 (1 days ago)
None