package libxml2-dev 2.7.8.dfsg-5.1ubuntu4.1 failed to install/upgrade: './usr/bin/xml2-config' is different from the same file on the system

[Andrew sallee]

I was installing Ruby 1.9.3 and making sure my dependencies were up to date.

ProblemType: Package
DistroRelease: Ubuntu 12.04
Package: libxml2-dev 2.7.8.dfsg-5.1ubuntu4.1
ProcVersionSignature: Ubuntu 3.2.0-24.39-generic 3.2.16
Uname: Linux 3.2.0-24-generic x86_64
NonfreeKernelModules: fglrx
ApportVersion: 2.0.1-0ubuntu7
AptOrdering:
 libxml2-dev: Install
 libxslt1-dev: Install
 libxml2-dev: Configure
 libxslt1-dev: Configure
Architecture: amd64
Date: Wed May 30 08:45:39 2012
DpkgTerminalLog:
 Unpacking libxml2-dev:i386 (from .../libxml2-dev_2.7.8.dfsg-5.1ubuntu4.1_i386.deb) ...
 dpkg: error processing /var/cache/apt/archives/libxml2-dev_2.7.8.dfsg-5.1ubuntu4.1_i386.deb (--unpack):
  './usr/bin/xml2-config' is different from the same file on the system
DuplicateSignature:
 Unpacking libxml2-dev:i386 (from .../libxml2-dev_2.7.8.dfsg-5.1ubuntu4.1_i386.deb) ...
 dpkg: error processing /var/cache/apt/archives/libxml2-dev_2.7.8.dfsg-5.1ubuntu4.1_i386.deb (--unpack):
  './usr/bin/xml2-config' is different from the same file on the system
ErrorMessage: './usr/bin/xml2-config' is different from the same file on the system
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007)
SourcePackage: libxml2
Title: package libxml2-dev 2.7.8.dfsg-5.1ubuntu4.1 failed to install/upgrade: './usr/bin/xml2-config' is different from the same file on the system
UpgradeStatus: Upgraded to precise on 2012-05-01 (31 days ago)