update-manager crashed with AuthorizationFailed in _run(): org.freedesktop.PolicyKit.Error.Failed: ('system-bus-name', {'name': ':1.134'}): org.debian.apt.update-cache

[Nikolaus Filus]

Binary package hint: update-manager

starting update-manager just shows the "system problem" error message and I have to kill update-manager. Starting update-manager from command line shows at least a stack trace:

Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/defer/__init__.py", line 472, in _inline_callbacks
    result = gen.throw(result.type, result.value, result.traceback)
  File "/usr/lib/python2.7/dist-packages/aptdaemon/gtkwidgets.py", line 633, in _run
    yield self._transaction.run()
aptdaemon.errors.AuthorizationFailed: org.freedesktop.PolicyKit.Error.Failed: ('system-bus-name', {'name': ':1.134'}): org.debian.apt.update-cache

ProblemType: Crash
DistroRelease: Ubuntu 11.04
Package: update-manager 1:0.147.1
ProcVersionSignature: Ubuntu 2.6.38-7.39-generic 2.6.38
Uname: Linux 2.6.38-7-generic i686
Architecture: i386
Date: Fri Apr 8 10:29:34 2011
ExecutablePath: /usr/bin/update-manager
InterpreterPath: /usr/bin/python2.7
ProcCmdline: /usr/bin/python2.7 /usr/bin/update-manager
PythonArgs: ['/usr/bin/update-manager']
SourcePackage: update-manager
Title: update-manager crashed with AuthorizationFailed in _run(): org.freedesktop.PolicyKit.Error.Failed: ('system-bus-name', {'name': ':1.134'}): org.debian.apt.update-cache
UpgradeStatus: Upgraded to natty on 2011-04-03 (4 days ago)
UserGroups: adm admin cdrom dialout disk libvirtd lpadmin plugdev sambashare users

[Apport retracing service (apport)]

Thank you for taking the time to report this crash and helping to make Ubuntu better. This particular crash has already been reported and is a duplicate of bug #710026, so is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Please continue to report any other bugs you may find.