update-notifier: backend_helper.py crashed with TransactionFailed in _run()

[Dmitry Shachnev]

update-notifier didn't like that indicator-messages has dependency problems on my system and crashed.

ProblemType: Crash
DistroRelease: Ubuntu 12.04
Package: update-notifier-common 0.119ubuntu8.5
ProcVersionSignature: Ubuntu 3.2.0-30.47-generic 3.2.27
Uname: Linux 3.2.0-30-generic i686
ApportVersion: 2.0.1-0ubuntu12
Architecture: i386
Date: Fri Aug 31 12:43:34 2012
ExecutablePath: /usr/lib/update-notifier/backend_helper.py
InstallationMedia: Ubuntu 10.04 "Lucid Lynx" - Beta i386 (20100318)
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 indicator-messages in _run()
UpgradeStatus: Upgraded to precise on 2012-02-09 (203 days ago)
UserGroups: adm admin audio cdrom dialout dip fax floppy fuse lpadmin netdev nopasswdlogin plugdev sambashare tape video
modified.conffile..etc.apt.apt.conf.d.10periodic:
 APT::Periodic::Update-Package-Lists "1";
 APT::Periodic::Download-Upgradeable-Packages "1";
 APT::Periodic::AutocleanInterval "0";
 APT::Periodic::Unattended-Upgrade "1";
mtime.conffile..etc.apt.apt.conf.d.10periodic: 2010-03-20T11:17:18.093565

[Launchpad Janitor (janitor)]

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