unkillable_shutdown crashed with AssertionError in add_proc_info()

[muni]

Binary package hint: apport

unkillable_shutdown crashed with AssertionError in add_proc_info()

ProblemType: Crash
ApportLog:
 apport (pid 5512) Mon Mar 22 13:48:15 2010: called for pid 5429, signal 11
 apport (pid 5512) Mon Mar 22 13:48:15 2010: executable: /usr/bin/nautilus (command line "nautilus")
 apport (pid 5512) Mon Mar 22 13:48:21 2010: wrote report /var/crash/_usr_bin_nautilus.1000.crash
Architecture: amd64
CrashReports:
 600:1000:1000:1223859:2010-03-22 13:50:00.000000000 +0000:2010-03-22 13:50:01.000000000 +0000:/var/crash/_usr_bin_nautilus.1000.crash
 600:0:0:10297:2010-03-22 13:27:26.000000000 +0000:2010-03-22 13:50:12.000000000 +0000:/var/crash/_usr_share_apport_unkillable_shutdown.0.crash
Date: Mon Mar 22 13:27:27 2010
DistroRelease: Ubuntu 10.04
ExecutablePath: /usr/share/apport/unkillable_shutdown
InterpreterPath: /usr/bin/python2.6
NonfreeKernelModules: nvidia
Package: apport 1.13.1-0ubuntu1
PackageArchitecture: all
ProcCmdline: /usr/bin/python /usr/share/apport/unkillable_shutdown -o 9348 -o 5549 -o 9349 -o 466
ProcEnviron: PATH=(custom, no user)
ProcVersionSignature: Ubuntu 2.6.32-16.25-generic
PythonArgs: ['/usr/share/apport/unkillable_shutdown', '-o', '9348', '-o', '5549', '-o', '9349', '-o', '466']
SourcePackage: apport
Title: unkillable_shutdown crashed with AssertionError in add_proc_info()
Uname: Linux 2.6.32-16-generic x86_64
UserGroups: vboxusers

[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 #537904, 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.