dconf-service crashed with SIGSEGV in g_variant_builder_add_value()

To reproduce:

1. Install raring daily ISO 26th Jan in virtualbox VM.
2. During install select automatic login.
3. Select defaults for everything else.
4. Reboot after install, and wait.

The dconf-service crash happens a few seconds after automatic login.

dpkg -l libglib2.0-0:
ii libglib2.0-0:amd64 2.35.4-0ubuntu5 amd64 GLib library of C routines

So either #1105102 is not fixed or this is a different bug.

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: Sat Jan 26 20:22:24 2013
ExecutablePath: /usr/lib/dconf/dconf-service
InstallationDate: Installed on 2013-01-26 (0 days ago)
InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Alpha amd64 (20130126)
MarkForUpload: True
ProcCmdline: /usr/lib/dconf/dconf-service
ProcEnviron:
 SHELL=/bin/bash
 XDG_RUNTIME_DIR=<set>
 PATH=(custom, no user)
 LANGUAGE=en_GB:en
 LANG=en_GB.UTF-8
SegvAnalysis:
 Segfault happened at: 0x7fdbecfea310: mov 0x20(%rdi),%eax
 PC (0x7fdbecfea310) 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: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo