package libxml-sax-perl 0.99+dfsg-1ubuntu0.1 [modified: usr/share/perl5/XML/SAX/Debian.pm] failed to install/upgrade: subprocess installed post-installation script returned error exit status 255

please fix this long term issue!!

ProblemType: Package
DistroRelease: Ubuntu 12.04
Package: libxml-sax-perl 0.99+dfsg-1ubuntu0.1 [modified: usr/share/perl5/XML/SAX/Debian.pm]
ProcVersionSignature: Ubuntu 3.2.0-48.74-generic 3.2.46
Uname: Linux 3.2.0-48-generic x86_64
ApportVersion: 2.0.1-0ubuntu17.3
AptOrdering:
 libxml-sax-perl: Configure
 libxml-libxml-perl: Configure
 libxml-sax-expat-perl: Configure
 libxml-sax-expatxs-perl: Configure
Architecture: amd64
Date: Sun Jun 30 22:36:30 2013
DuplicateSignature: package:libxml-sax-perl:0.99+dfsg-1ubuntu0.1 [modified: usr/share/perl5/XML/SAX/Debian.pm]:subprocess installed post-installation script returned error exit status 255
ErrorMessage: subprocess installed post-installation script returned error exit status 255
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
MarkForUpload: True
PackageArchitecture: all
SourcePackage: libxml-sax-perl
Title: package libxml-sax-perl 0.99+dfsg-1ubuntu0.1 [modified: usr/share/perl5/XML/SAX/Debian.pm] failed to install/upgrade: subprocess installed post-installation script returned error exit status 255
UpgradeStatus: No upgrade log present (probably fresh install)