dconf-service crashed with SIGSEGV in g_variant_builder_add_value()

[Fred]

Unsure.

Was on my account, then logged into a guest account, then logged out and back into my account.
Then it showed me the report dialog.

ProblemType: Crash
DistroRelease: Ubuntu 13.04
Package: dconf-service 0.15.2-0ubuntu4
ProcVersionSignature: Ubuntu 3.8.0-1.5-generic 3.8.0-rc4
Uname: Linux 3.8.0-1-generic x86_64
ApportVersion: 2.8-0ubuntu2
Architecture: amd64
Date: Fri Jan 25 13:03:39 2013
ExecutablePath: /usr/lib/dconf/dconf-service
InstallationDate: Installed on 2011-10-21 (461 days ago)
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
MarkForUpload: True
ProcCmdline: /usr/lib/dconf/dconf-service
SegvAnalysis:
 Segfault happened at: 0x7f8807b35520: mov 0x20(%rdi),%eax
 PC (0x7f8807b35520) ok
 source "0x20(%rdi)" (0x00000020) not located in a known VMA region (needed readable region)!
 destination "%eax" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: d-conf
StacktraceTop:
 ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
 g_variant_builder_add_value () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
 ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
 g_variant_new_va () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
 g_variant_new () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
Title: dconf-service crashed with SIGSEGV in g_variant_builder_add_value()
UpgradeStatus: Upgraded to raring on 2013-01-20 (4 days ago)
UserGroups:

[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 #1104883, 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.