Unable to update rc "ubuntu-desktop"

[john lindholm]

Running paket update on 12. pre release and it failed after partial uptade.
Description: Ubuntu precise (development branch)
Release: 12.04

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: update-manager 1:0.156.7
ProcVersionSignature: Ubuntu 3.2.0-18.29-generic 3.2.9
Uname: Linux 3.2.0-18-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 1.94.1-0ubuntu2
Aptdaemon:
 Mar 12 19:38:53 john-desktop AptDaemon: INFO: Initializing daemon
 Mar 12 19:38:53 john-desktop AptDaemon.PackageKit: INFO: Initializing PackageKit compat layer
 Mar 12 19:38:53 john-desktop AptDaemon.PackageKit: INFO: Initializing PackageKit transaction
 Mar 12 19:38:53 john-desktop AptDaemon.Worker: INFO: Simulating trans: /org/debian/apt/transaction/84e922c3aa8d45e28fd6a23cfc438e40
 Mar 12 19:38:53 john-desktop AptDaemon.Worker: INFO: Processing transaction /org/debian/apt/transaction/84e922c3aa8d45e28fd6a23cfc438e40
Architecture: amd64
Date: Mon Mar 12 19:39:28 2012
GsettingsChanges:
 com.ubuntu.update-manager first-run false
 com.ubuntu.update-manager launch-time 1331577481
 com.ubuntu.update-manager show-details true
 com.ubuntu.update-manager window-height 600
 com.ubuntu.update-manager window-width 600
PackageArchitecture: all
ProcEnviron:
 TERM=xterm
 LANG=sv_SE.UTF-8
 SHELL=/bin/bash
SourcePackage: update-manager
UpgradeStatus: Upgraded to precise on 2012-03-12 (0 days ago)