package libqtcore4 4:4.8.1-0ubuntu4.1 failed to install/upgrade: conffile './etc/xdg/Trolltech.conf' is not in sync with other instances of the same package

[Mixta]

Cannot install or remove any programs on 12.04. When i try to clean up the system application catalogue i get this error.

ProblemType: Package
DistroRelease: Ubuntu 12.04
Package: libqtcore4 4:4.8.1-0ubuntu4.1
ProcVersionSignature: Ubuntu 3.2.0-24.39-generic 3.2.16
Uname: Linux 3.2.0-24-generic x86_64
ApportVersion: 2.0.1-0ubuntu7
Architecture: amd64
Date: Fri Jul 6 09:20:23 2012
DpkgHistoryLog:
 Start-Date: 2012-07-06 09:20:10
 Commandline: aptdaemon role='role-fix-broken-depends' sender=':1.74'
 Install: libqtcore4:i386 (4.8.1-0ubuntu4.1, automatic)
DpkgTerminalLog:
 Unpacking libqtcore4:i386 (from .../libqtcore4_4%3a4.8.1-0ubuntu4.1_i386.deb) ...
 dpkg: error processing /var/cache/apt/archives/libqtcore4_4%3a4.8.1-0ubuntu4.1_i386.deb (--unpack):
  conffile './etc/xdg/Trolltech.conf' is not in sync with other instances of the same package
DuplicateSignature:
 Unpacking libqtcore4:i386 (from .../libqtcore4_4%3a4.8.1-0ubuntu4.1_i386.deb) ...
 dpkg: error processing /var/cache/apt/archives/libqtcore4_4%3a4.8.1-0ubuntu4.1_i386.deb (--unpack):
  conffile './etc/xdg/Trolltech.conf' is not in sync with other instances of the same package
ErrorMessage: conffile './etc/xdg/Trolltech.conf' is not in sync with other instances of the same package
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
SourcePackage: qt4-x11
Title: package libqtcore4 4:4.8.1-0ubuntu4.1 failed to install/upgrade: conffile './etc/xdg/Trolltech.conf' is not in sync with other instances of the same package
UpgradeStatus: Upgraded to precise on 2012-05-23 (43 days ago)
modified.conffile..etc.xdg.Trolltech.conf:
 [qt]
 4.8\libraryPath=/usr/lib/kde4/plugins
mtime.conffile..etc.xdg.Trolltech.conf: 2012-04-11T01:57:48

[Apport retracing service (apport)]

Thank you for taking the time to report this crash and helping to make this software better. This particular crash has already been reported and is a duplicate of bug #993110, so is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Please continue to report any other bugs you may find.