crash when creating new user than switching back to old user

[Lyn Perrine]

Description: Ubuntu Trusty Tahr (development branch)
Release: 14.04
gnome-system-tools:
  Installed: 3.0.0-3ubuntu3
  Candidate: 3.0.0-3ubuntu3
  Version table:
 *** 3.0.0-3ubuntu3 0
        500 http://us.archive.ubuntu.com/ubuntu/ trusty/universe amd64 Packages
        100 /var/lib/dpkg/status
I was expected nothing to crash when I created a new user and switched back to the other user.

Instead when I logged back in to the the original user not the one I created gnome system tools crashed by the time I updated it.

ProblemType: Crash
DistroRelease: Ubuntu 14.04
Package: gnome-system-tools 3.0.0-3ubuntu3
ProcVersionSignature: Ubuntu 3.13.0-3.18-generic 3.13.0-rc8
Uname: Linux 3.13.0-3-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.13.3-0ubuntu1
Architecture: amd64
CurrentDesktop: LXDE
Date: Sun Mar 9 22:05:48 2014
ExecutablePath: /usr/bin/users-admin
InstallationDate: Installed on 2014-01-02 (67 days ago)
InstallationMedia: Lubuntu 14.04 "Trusty Tahr" - Alpha amd64 (20140101)
ProcCmdline: users-admin
ProcEnviron:
 LANGUAGE=en_US
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SegvAnalysis: Skipped: missing required field "Disassembly"
Signal: 11
SourcePackage: gnome-system-tools
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo

[Apport retracing service (apport)]

StacktraceTop:
 magazine_cache_push_magazine (ix=12, magazine_chunks=<optimized out>, count=7) at /build/buildd/glib2.0-2.39.91/./glib/gslice.c:700
 thread_memory_magazine2_unload (ix=<optimized out>, tmem=<optimized out>) at /build/buildd/glib2.0-2.39.91/./glib/gslice.c:809
 g_slice_free1 (mem_size=<optimized out>, mem_block=0x10069e0) at /build/buildd/glib2.0-2.39.91/./glib/gslice.c:1094
 g_type_free_instance (instance=0x1006a80) at /build/buildd/glib2.0-2.39.91/./gobject/gtype.c:1938
 _gtk_tree_data_list_free (list=<optimized out>, column_headers=column_headers@entry=0xc133d0) at /build/buildd/gtk+3.0-3.10.7/./gtk/gtktreedatalist.c:52