package libnl-genl-3-200 3.2.3-2ubuntu2 failed to install/upgrade: libnl-genl-3-200:i386 3.2.3-2ubuntu2 (Multi-Arch

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ProblemType: Package
DistroRelease: Ubuntu 12.04
Package: libnl-genl-3-200 3.2.3-2ubuntu2
ProcVersionSignature: Ubuntu 3.2.0-23.36-generic 3.2.14
Uname: Linux 3.2.0-23-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.0.1-0ubuntu3
Architecture: amd64
Date: Sun Apr 15 12:52:00 2012
DuplicateSignature:
 Unpacking libpolkit-agent-1-0:i386 (from .../libpolkit-agent-1-0_0.104-1_i386.deb) ...
 Selecting previously unselected package libnl-3-200:i386.
 dpkg: error processing /var/cache/apt/archives/libnl-3-200_3.2.3-2ubuntu2_i386.deb (--unpack):
  libnl-3-200:i386 3.2.3-2ubuntu2 (Multi-Arch: no) is not co-installable with libnl-3-200:amd64 3.2.3-2ubuntu2 (Multi-Arch: no) which is currently installed
ErrorMessage: libnl-genl-3-200:i386 3.2.3-2ubuntu2 (Multi-Arch
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
SourcePackage: libnl3
Title: package libnl-genl-3-200 3.2.3-2ubuntu2 failed to install/upgrade: libnl-genl-3-200:i386 3.2.3-2ubuntu2 (Multi-Arch
UpgradeStatus: Upgraded to precise on 2012-04-15 (0 days ago)