abrt version: 1.1.17
architecture: i686
cmdline: /usr/bin/python /usr/bin/gnome-shell --replace
component: gnome-shell
executable: /usr/bin/gnome-shell
kernel: 2.6.38-0.rc5.git1.1.fc15.i686
package: gnome-shell-2.91.6-6.fc15
reason: gnome-shell:577:launch_component:GError: Failed to contact configuration server; the most common cause is a missing or misconfigured D-Bus session bus daemon. See http://projects.gnome.org/gconf/ for information. (Details -  1: Failed to get connection to session: Error connecting: Connection refused)
release: Fedora release 15 (Lovelock)
time: 1302987890
uid: 500

backtrace
-----
gnome-shell:577:launch_component:GError: Failed to contact configuration server; the most common cause is a missing or misconfigured D-Bus session bus daemon. See http://projects.gnome.org/gconf/ for information. (Details -  1: Failed to get connection to session: Error connecting: Connection refused)

Traceback (most recent call last):
  File "/usr/bin/gnome-shell", line 788, in <module>
    restore_gnome()
  File "/usr/bin/gnome-shell", line 598, in restore_gnome
    launch_component("/desktop/gnome/session/required_components/windowmanager")
  File "/usr/bin/gnome-shell", line 577, in launch_component
    component = client.get_string(gconf_path)
GError: Failed to contact configuration server; the most common cause is a missing or misconfigured D-Bus session bus daemon. See http://projects.gnome.org/gconf/ for information. (Details -  1: Failed to get connection to session: Error connecting: Connection refused)

Local variables in innermost frame:
gconf: <module 'gconf' from '/usr/lib/python2.7/site-packages/gtk-2.0/gconf.so'>
gio: <module 'gio' from '/usr/lib/python2.7/site-packages/gtk-2.0/gio/__init__.pyc'>
client: <gconf.Client object at 0x98693ec (GConfClient at 0x98b1c88)>
gconf_path: '/desktop/gnome/session/required_components/windowmanager'

How to reproduce
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1.?
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3.