gnome-session crashed with SIGSEGV in g_variant_unref()

[ebnf]

Logging in after restarting lightdm.

ProblemType: Crash
DistroRelease: Ubuntu 11.10
Package: gnome-session-bin 3.1.90-0ubuntu3
ProcVersionSignature: Ubuntu 2.6.38-11.49-genusername 2.6.38.8
Uname: Linux 2.6.38-11-generic x86_64
Architecture: amd64
Date: Sat Sep 3 12:21:15 2011
ExecutablePath: /usr/bin/gnome-session
ProcCmdline: x-session-manager
ProcEnviron:
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SegvAnalysis:
 Segfault happened at: 0x7f41eeae9239 <g_variant_unref+9>: lock xadd %eax,0x24(%rdi)
 PC (0x7f41eeae9239) ok
 source "%eax" ok
 destination "0x24(%rdi)" (0x00000024) not located in a known VMA region (needed writable region)!
SegvReason: writing NULL VMA
Signal: 11
SourcePackage: gnome-session
StacktraceTop:
 g_variant_unref () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
 g_settings_get_string () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
 ?? ()
 __libc_start_main (main=0x40b790, argc=1, ubp_av=0x7fff020219f8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff020219e8) at libc-start.c:226
 ?? ()
Title: gnome-session crashed with SIGSEGV in g_variant_unref()
UpgradeStatus: Upgraded to oneiric on 2011-09-04 (0 days ago)
UserGroups: adm admin cdrom dialout lp lpadmin plugdev sambashare

[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 #836567, 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.