backend_helper.py crashed with DBusException in call_blocking(): org.freedesktop.DBus.Error.NoReply: Message did not receive a reply (timeout by message bus)

[Carla Sella]

I had just seen some updates available in update notifier, I clicked on show updates and then selected install.
When crash occured, the updates had not been updated and they had been proposed again.

ProblemType: Crash
DistroRelease: Ubuntu 12.04
Package: update-notifier-common 0.117ubuntu3.1
ProcVersionSignature: Ubuntu 3.2.0-2.6-generic 3.2.0-rc3
Uname: Linux 3.2.0-2-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 1.90-0ubuntu1
Architecture: amd64
Date: Sat Dec 3 17:00:46 2011
ExecutablePath: /usr/lib/update-notifier/backend_helper.py
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release amd64 (20091027)
InterpreterPath: /usr/bin/python2.7
PackageArchitecture: all
ProcCmdline: /usr/bin/python /usr/lib/update-notifier/backend_helper.py install_all_updates
PythonArgs: ['/usr/lib/update-notifier/backend_helper.py', 'install_all_updates']
SourcePackage: update-notifier
Title: backend_helper.py crashed with DBusException in call_blocking(): org.freedesktop.DBus.Error.NoReply: Message did not receive a reply (timeout by message bus)
UpgradeStatus: Upgraded to precise on 2011-12-02 (0 days ago)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare video
modified.conffile..etc.apt.apt.conf.d.10periodic:
 APT::Periodic::Update-Package-Lists "1";
 APT::Periodic::Download-Upgradeable-Packages "0";
 APT::Periodic::AutocleanInterval "0";
 APT::Periodic::Unattended-Upgrade "0";
mtime.conffile..etc.apt.apt.conf.d.10periodic: 2010-12-27T23:21:25.636570
---
ApportVersion: 1.90-0ubuntu1
Architecture: amd64
DistroRelease: Ubuntu 12.04
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release amd64 (20091027)
NonfreeKernelModules: nvidia
Package: update-notifier 0.117ubuntu3.1
PackageArchitecture: amd64
ProcVersionSignature: Ubuntu 3.2.0-7.13-generic 3.2.0-rc7
Tags: precise
Uname: Linux 3.2.0-7-generic x86_64
UpgradeStatus: Upgraded to precise on 2011-12-02 (28 days ago)
UserGroups:

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Carla Sella (carla-sella)]

apport information

[Carla Sella (carla-sella)]

apport information

[Carla Sella (carla-sella)]

Update notifier keeps on crashing every time I try to use it and i does not work see bug #899648.