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[Paul Sladen <ubuntu@xxxxxxxxxxxxxxx>]

I hit this with a slightly different method, but also related to guest-
session creation, logout and then switchback.

** Tags added: sladen-11.10-upgrade

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https://bugs.launchpad.net/bugs/804195

Title:
  gnome-screensaver-dialog crashed with SIGSEGV in
  g_cclosure_marshal_VOID__VOID()

Status in GNOME Screensaver:
  New
Status in “gnome-screensaver” package in Ubuntu:
  Triaged
Status in “gnome-screensaver” source package in Oneiric:
  Triaged

Bug description:
  On Oneiric up to date.

  TEST CASE:
  1. Click on Session Indicator and select 'Guest Session'
  2. The screen locks and a password dialog is displayed.
  3. Leave the password empty and click on 'Switch User'

  Result:
  This crash.

  ProblemType: Crash
  DistroRelease: Ubuntu 11.10
  Package: gnome-screensaver 3.0.0-2ubuntu2
  ProcVersionSignature: Ubuntu 3.0-2.3-generic 3.0.0-rc4
  Uname: Linux 3.0-2-generic i686
  Architecture: i386
  Date: Fri Jul  1 10:49:32 2011
  EcryptfsInUse: Yes
  ExecutablePath: /usr/lib/gnome-screensaver/gnome-screensaver-dialog
  ProcCmdline: /usr/lib/gnome-screensaver/gnome-screensaver-dialog --status-message= --enable-switch
  ProcEnviron:
   SHELL=/bin/bash
   PATH=(custom, user)
   LANG=en_US.utf8
  SegvAnalysis:
   Segfault happened at: 0x8050618:	mov    0x8,%eax
   PC (0x08050618) ok
   source "0x8" (0x00000008) not located in a known VMA region (needed readable region)!
   destination "%eax" ok
  SegvReason: reading NULL VMA
  Signal: 11
  SourcePackage: gnome-screensaver
  StacktraceTop:
   ?? ()
   g_cclosure_marshal_VOID__VOID (closure=0x9406528, return_value=0x0, n_param_values=1, param_values=0x94485c0, invocation_hint=0xbf8c40d0, marshal_data=0x0) at /build/buildd/glib2.0-2.29.8/./gobject/gmarshal.c:79
   g_closure_invoke (closure=0x9406528, return_value=0x0, n_param_values=1, param_values=0x94485c0, invocation_hint=0xbf8c40d0) at /build/buildd/glib2.0-2.29.8/./gobject/gclosure.c:771
   signal_emit_unlocked_R (node=0x93af520, detail=0, instance=0x93c3b10, emission_return=0x0, instance_and_params=0x94485c0) at /build/buildd/glib2.0-2.29.8/./gobject/gsignal.c:3256
   g_signal_emit_valist (instance=0x93c3b10, signal_id=109, detail=0, var_args=0xbf8c427c "\366`\024") at /build/buildd/glib2.0-2.29.8/./gobject/gsignal.c:2987
  Title: gnome-screensaver-dialog crashed with SIGSEGV in g_cclosure_marshal_VOID__VOID()
  UpgradeStatus: Upgraded to oneiric on 2011-06-27 (3 days ago)
  UserGroups: adm admin audio cdrom dialout dip floppy fuse libvirtd lpadmin netdev plugdev scanner sudo video

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