package libsane 1.0.22-7ubuntu1 [modified: lib/udev/rules.d/40-libsane.rules] failed to install/upgrade: './lib/udev/rules.d/40-libsane.rules' is different from the same file on the system

[melvin d reodique]

message raised on sudo apt-get install ia32-libs
package libsane 1.0.22-7ubuntu1 [modified: lib/udev/rules.d/40-libsane.rules] failed to install/upgrade: './lib/udev/rules.d/40-libsane.rules' is different from the same file on the system

$ apt-cache policy ia32-libs
ia32-libs:
  Installed: 20090808ubuntu36
  Candidate: 20090808ubuntu36
  Version table:
 *** 20090808ubuntu36 0
        500 http://ph.archive.ubuntu.com/ubuntu/ precise-updates/universe amd64 Packages
        100 /var/lib/dpkg/status
     20090808ubuntu35 0
        500 http://ph.archive.ubuntu.com/ubuntu/ precise/universe amd64 Packages

$ lsb_release -rd
Description: Ubuntu 12.04.2 LTS
Release: 12.04

expected to install the package with no error
raised an error though the installation went thru, no idea if this will impated the use adt-bundle-linux

ProblemType: Package
DistroRelease: Ubuntu 12.04
Package: libsane 1.0.22-7ubuntu1 [modified: lib/udev/rules.d/40-libsane.rules]
ProcVersionSignature: Ubuntu 3.2.0-38.61-generic 3.2.37
Uname: Linux 3.2.0-38-generic x86_64
ApportVersion: 2.0.1-0ubuntu17.1
Architecture: amd64
Date: Sat Mar 9 10:32:52 2013
DuplicateSignature:
 Unpacking libsane:i386 (from .../libsane_1.0.22-7ubuntu1_i386.deb) ...
 dpkg: error processing /var/cache/apt/archives/libsane_1.0.22-7ubuntu1_i386.deb (--unpack):
  './lib/udev/rules.d/40-libsane.rules' is different from the same file on the system
ErrorMessage: './lib/udev/rules.d/40-libsane.rules' is different from the same file on the system
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
MarkForUpload: True
SourcePackage: sane-backends
Title: package libsane 1.0.22-7ubuntu1 [modified: lib/udev/rules.d/40-libsane.rules] failed to install/upgrade: './lib/udev/rules.d/40-libsane.rules' is different from the same file on the system
UpgradeStatus: No upgrade log present (probably fresh install)
mtime.conffile..etc.sane.d.dll.conf: 2013-03-05T05:52:07.469499

[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 #952544, 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.