update-manager crashed with TypeError in confirmChanges(): glib.markup_escape_text() takes at most 1 argument (2 given)

[Shepard]

After upgrading and restarting the OS I clicked the little envelope in the upper right corner and selected Chat. Then this message appeared (might be unrelated, before the upgrade I encountered the same error while running the software update). The Chat window did not appear (happens a lot) but the status changed to 'Available'.

ProblemType: Crash
DistroRelease: Ubuntu 11.10
Package: update-manager 1:0.152.18
ProcVersionSignature: Ubuntu 3.0.0-11.17-generic-pae 3.0.4
Uname: Linux 3.0.0-11-generic-pae i686
ApportVersion: 1.22.1-0ubuntu2
Architecture: i386
Date: Thu Sep 15 09:28:44 2011
ExecutablePath: /usr/bin/update-manager
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Beta i386 (20110901)
InterpreterPath: /usr/bin/python2.7
PackageArchitecture: all
ProcCmdline: /usr/bin/python /usr/bin/update-manager --dist-upgrade
PythonArgs: ['/usr/bin/update-manager', '--dist-upgrade']
SourcePackage: update-manager
Title: update-manager crashed with TypeError in confirmChanges(): glib.markup_escape_text() takes at most 1 argument (2 given)
UpgradeStatus: Upgraded to oneiric on 2011-09-15 (0 days ago)
UserGroups:

VarLogDistupgradeHistorylog:
 Start-Date: 2011-09-15 09:38:26
 Install: linux-headers-3.0.0-11-generic-pae:i386 (3.0.0-11.17, automatic), linux-headers-3.0.0-11:i386 (3.0.0-11.17, automatic), linux-headers-3.0.0-11-generic:i386 (3.0.0-11.17, automatic), linux-image-3.0.0-11-generic-pae:i386 (3.0.0-11.17), linux-image-3.0.0-11-generic:i386 (3.0.0-11.17)
 Upgrade: linux-headers-generic:i386 (3.0.0.10.11, 3.0.0.11.12), linux-image-generic:i386 (3.0.0.10.11, 3.0.0.11.12), linux-image-generic-pae:i386 (3.0.0.10.11, 3.0.0.11.12), linux-generic-pae:i386 (3.0.0.10.11, 3.0.0.11.12), linux-headers-generic-pae:i386 (3.0.0.10.11, 3.0.0.11.12), linux-generic:i386 (3.0.0.10.11, 3.0.0.11.12)
 Remove: libreoffice-l10n-en-gb:i386 (3.4.2-2ubuntu2), libreoffice-l10n-en-za:i386 (3.4.2-2ubuntu2), libreoffice-help-en-gb:i386 (3.4.2-2ubuntu2)
 End-Date: 2011-09-15 09:40:36

[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 #849073, 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.