update-manager wants to install openjdk-6-jre:i386

I have a 64 bit system upgraded from oneiric. Every time I run update manager it says that two "new installs" are available:

openjdk-6-jre-headless:i386
openjdk-6-jre:i386

If I allow it to attempt installing these packages, dpkg crashes with:

dpkg: error processing /var/cache/apt/archives/openjdk-6-jre-headless_6b24~pre4-1ubuntu1_i386.deb (--unpack):
 conffile './etc/java-6-openjdk/security/java.policy' is not in sync with other instances of the same package
dpkg-deb: error: subprocess paste was killed by signal (Broken pipe)

(full log also attached attached)

After this has happened apt is in a broken state. sudo apt-get -f install will not fix it, as it just tries again and fails to install the openjdk-6-jre:i386 package. It is necessary to go to a terminal and run "apt-get -f purge icedtea-6-jre-cacao:i386 icedtea-6-jre-jamvm:i386" before any further package tasks can be performed.

If I run "apt-get dist-upgrade" then it tells me there are no updates. Only update-manager is trying to install those i386 packages.

I have tried purging everything java related from the system, 32 bit or 64 bit, but those two "updates" just won't go away.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: openjdk-6-jre (not installed)
ProcVersionSignature: Ubuntu 3.2.0-12.20-generic 3.2.2
Uname: Linux 3.2.0-12-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 1.91-0ubuntu1
Architecture: amd64
Date: Tue Jan 31 04:49:55 2012
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Beta amd64 (20110921.2)
SourcePackage: openjdk-6
UpgradeStatus: Upgraded to precise on 2012-01-29 (1 days ago)