lightdm crashed with SIGSEGV in g_closure_invoke()

[Dave Walker]

Post login, lightdm segfaults

ProblemType: Crash
DistroRelease: Ubuntu 11.10
Package: lightdm 0.9.2-0ubuntu4
ProcVersionSignature: Ubuntu 3.0.0-7.9-generic 3.0.0
Uname: Linux 3.0.0-7-generic x86_64
NonfreeKernelModules: nvidia wl
Architecture: amd64
Date: Wed Aug 3 10:26:04 2011
ExecutablePath: /usr/sbin/lightdm
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Alpha amd64+mac (20101218)
ProcCmdline: lightdm
ProcCwd: /
ProcEnviron: PATH=(custom, no user)
SegvAnalysis:
 Segfault happened at: 0x416de1: mov 0x8(%rax),%rcx
 PC (0x00416de1) ok
 source "0x8(%rax)" (0x00000008) not located in a known VMA region (needed readable region)!
 destination "%rcx" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: lightdm
StacktraceTop:
 ?? ()
 ?? ()
 ?? ()
 g_closure_invoke () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
 ?? () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
Title: lightdm crashed with SIGSEGV in g_closure_invoke()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:

[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 #819314, 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.