apport/ui.py traceback spam in .xsession-errors

My .xsession-errors is filling up with repeating instances of this:

| Traceback (most recent call last):
| File "/usr/share/apport/apport-gtk", line 368, in <module>
| app.run_argv()
| File "/usr/lib/python2.7/dist-packages/apport/ui.py", line 599, in run_argv
| return self.run_crashes()
| File "/usr/lib/python2.7/dist-packages/apport/ui.py", line 177, in run_crashes
| self.run_crash(f)
| File "/usr/lib/python2.7/dist-packages/apport/ui.py", line 246, in run_crash
| response = self.ui_present_crash(desktop_entry)
| File "/usr/share/apport/apport-gtk", line 75, in ui_present_crash
| n = GLib.markup_escape_text(n, -1).decode('UTF-8')
| TypeError: glib.markup_escape_text() takes at most 1 argument (2 given)

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: apport-gtk 1.22-0ubuntu3
ProcVersionSignature: Ubuntu 3.0.0-10.16-generic 3.0.4
Uname: Linux 3.0.0-10-generic i686
ApportLog:

Architecture: i386
Date: Mon Sep 5 11:31:53 2011
PackageArchitecture: all
ProcEnviron:
 PATH=(custom, user)
 LANG=en_GB.UTF-8
 SHELL=/usr/bin/zsh
SourcePackage: apport
UpgradeStatus: Upgraded to oneiric on 2011-09-02 (2 days ago)