Quick update on what this bug is about.  I went through the
ProcStatus.txt file on this bug and all its duplicates, and they all
specify a UID of 999, which is below the default MIN_UID of 1000.
Now, accountsservice will ignore any user below MIN_UID, so you have to
actually log in as the user under that MIN_UID to get the crash.  But
this is difficult using lightdm, because it won't list such users by
default.  So enable manual login or use a different login manager.

There are some patches upstream to accountsservice to not use MIN_UID
like this (apparently MIN_UID is only supposed to be used at account
creation time, not as a way to check 'system user' status).  See
http://cgit.freedesktop.org/accountsservice/log/ (there are ~5 separate
patches for this issue).

I haven't tested these patches yet, but presumably they will allow g-c-c
to not freak out when trying to talk to accountsservice about the logged
in user with a less-than-MIN_UID uid.  Will test and report back.

** Changed in: gnome-control-center (Ubuntu Precise)
     Assignee: (unassigned) => Michael Terry (mterry)

** Bug watch added: freedesktop.org Bugzilla #44408
   https://bugs.freedesktop.org/show_bug.cgi?id=44408

** Also affects: accountsservice via
   https://bugs.freedesktop.org/show_bug.cgi?id=44408
   Importance: Unknown
       Status: Unknown

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https://bugs.launchpad.net/bugs/908140

Title:
  [user-accounts]: segfault in um_user_set_icon_file()

Status in D-Bus interfaces for querying and manipulating user account 
information:
  Unknown
Status in GNOME Control Center:
  Unknown
Status in “gnome-control-center” package in Ubuntu:
  Triaged
Status in “gnome-control-center” source package in Precise:
  Triaged

Bug description:
  User account was not possible when i gave in the Icon then gnome closed
  I had installed ubuntu in german language but it always changes after restart

  ProblemType: Crash
  DistroRelease: Ubuntu 11.10
  Package: gnome-control-center 1:3.2.0-0ubuntu6
  ProcVersionSignature: Ubuntu 3.0.0-12.20-generic 3.0.4
  Uname: Linux 3.0.0-12-generic i686
  ApportVersion: 1.23-0ubuntu3
  Architecture: i386
  CasperVersion: 1.287
  CrashCounter: 1
  Date: Fri Dec 23 14:31:44 2011
  ExecutablePath: /usr/bin/gnome-control-center
  LiveMediaBuild: Ubuntu 11.10 "Oneiric Ocelot" - Release i386 (20111012)
  ProcCmdline: gnome-control-center --overview
  ProcEnviron:
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SegvAnalysis:
   Segfault happened at: 0x17e2103d:    mov    0x10(%eax),%eax
   PC (0x17e2103d) ok
   source "0x10(%eax)" (0x00000010) not located in a known VMA region (needed 
readable region)!
   destination "%eax" ok
  SegvReason: reading NULL VMA
  Signal: 11
  SourcePackage: gnome-control-center
  StacktraceTop:
   ?? () from /usr/lib/control-center-1/panels/libuser-accounts.so
   ?? () from /usr/lib/control-center-1/panels/libuser-accounts.so
   g_cclosure_marshal_VOID__VOID () from 
/usr/lib/i386-linux-gnu/libgobject-2.0.so.0
   g_closure_invoke () from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
   ?? () from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
  Title: gnome-control-center crashed with SIGSEGV in 
g_cclosure_marshal_VOID__VOID()
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare
  usr_lib_gnome-control-center:
   deja-dup           20.0-0ubuntu3
   gnome-bluetooth    3.2.0-0ubuntu1
   indicator-datetime 0.3.0-0ubuntu3

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