zenity crashed with SIGSEGV in g_cclosure_marshal_VOID()

[MC Return]

I was just logged in, when the error report was shown. I have no idea what triggered it.

ProblemType: Crash
DistroRelease: Ubuntu 12.04
Package: zenity 3.4.0-0ubuntu2
ProcVersionSignature: Ubuntu 3.2.0-22.36~pre201204060400-generic 3.2.14
Uname: Linux 3.2.0-22-generic x86_64
ApportVersion: 2.0-0ubuntu4
Architecture: amd64
Date: Sat Apr 7 00:05:47 2012
ExecutablePath: /usr/bin/zenity
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha amd64 (20120226)
ProcCmdline: zenity --list --radiolist --title Failsafe-X --width 600 --height 300 --text What\ would\ you\ like\ to\ do? --column --column Choice --column TRUE LOW_RES_MODE Run\ in\ low-graphics\ mode\ for\ just\ one\ session FALSE RECONFIGURE Reconfigure\ graphics FALSE TROUBLESHOOT Troubleshoot\ the\ error FALSE EXIT_TO_CONSOLE Exit\ to\ console\ login --hide-column 2
ProcEnviron:
 TERM=linux
 PATH=(custom, no user)
SegvReason: writing NULL VMA
Signal: 11
SourcePackage: zenity
Title: zenity crashed with SIGSEGV in g_cclosure_marshal_VOID()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: pkcs11

[Apport retracing service (apport)]

Thank you for taking the time to report this crash and helping to make this software better. This particular crash has already been reported and is a duplicate of bug #969031, 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.

[MC Return (mc-return)]

Additional information:
I had a problem with xorg-edgers-PPA, which made X crash. After upgrading xorg-server this is now fixed again. It was the first boot after this fix, when Zenity crashed.