package libqt4-network 4:4.7.4-1ubuntu4 failed to install/upgrade: ErrorMessage: './usr/share/doc/libqt4-network/LGPL_EXCEPTION.txt' is different from the same file on the system

[moilu]

Lenovo X61s 64bit 4G ram
Intel® Core™2 Duo CPU L7500 @ 1.60GHz × 2

ProblemType: Package
DistroRelease: Ubuntu 12.04
Package: libqt4-network 4:4.7.4-1ubuntu4
ProcVersionSignature: Ubuntu 3.2.0-1.3-generic 3.2.0-rc2
Uname: Linux 3.2.0-1-generic x86_64
ApportVersion: 1.90-0ubuntu1
Architecture: amd64
Date: Fri Nov 25 03:34:33 2011
ErrorMessage: ErrorMessage: './usr/share/doc/libqt4-network/LGPL_EXCEPTION.txt' is different from the same file on the system
InstallationMedia: Ubuntu-Studio 10.10 "Maverick Meerkat" - Release amd64 (20101008)
SourcePackage: qt4-x11
Title: package libqt4-network 4:4.7.4-1ubuntu4 failed to install/upgrade: ErrorMessage: './usr/share/doc/libqt4-network/LGPL_EXCEPTION.txt' is different from the same file on the system
UpgradeStatus: Upgraded to precise on 2011-11-25 (0 days ago)