package libqtgui4 4:4.7.4-0ubuntu8 [modified: usr/share/doc/libqtgui4/copyright] failed to install/upgrade: './usr/share/doc/libqtgui4/LGPL_EXCEPTION.txt' is different from the same file on the system

[Anders Kaseorg]

This looks like some kind of multiarch problem.

ProblemType: Package
DistroRelease: Ubuntu 12.04
Package: libqtgui4 4:4.7.4-0ubuntu8 [modified: usr/share/doc/libqtgui4/copyright]
ProcVersionSignature: Ubuntu 3.2.0-1.2-generic 3.2.0-rc2
Uname: Linux 3.2.0-1-generic x86_64
NonfreeKernelModules: openafs
ApportVersion: 1.26-0ubuntu1
Architecture: amd64
Date: Tue Nov 22 14:28:45 2011
DuplicateSignature:
 Unpacking replacement libqtgui4 ...
 dpkg: error processing /var/cache/apt/archives/libqtgui4_4%3a4.7.4-1ubuntu3_amd64.deb (--unpack):
  './usr/share/doc/libqtgui4/LGPL_EXCEPTION.txt' is different from the same file on the system
EcryptfsInUse: Yes
ErrorMessage: './usr/share/doc/libqtgui4/LGPL_EXCEPTION.txt' is different from the same file on the system
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Alpha amd64 (20101202)
SourcePackage: qt4-x11
Title: package libqtgui4 4:4.7.4-0ubuntu8 [modified: usr/share/doc/libqtgui4/copyright] failed to install/upgrade: './usr/share/doc/libqtgui4/LGPL_EXCEPTION.txt' is different from the same file on the system
UpgradeStatus: Upgraded to precise on 2011-11-16 (6 days ago)