Comment 9 for bug 475867

Same problem here. Here is the syslog dump:

Mar 30 10:09:01 vbox01 console-kit-daemon[789]: GLib-GObject-WARNING: instance of invalid non-instantiatable type `<invalid>'
Mar 30 10:09:01 vbox01 console-kit-daemon[789]: GLib-GObject-CRITICAL: g_signal_emit_valist: assertion `G_TYPE_CHECK_INSTANCE (instance)' failed
Mar 30 10:09:01 vbox01 console-kit-daemon[789]: GLib-GObject-CRITICAL: g_object_unref: assertion `G_IS_OBJECT (object)' failed
Mar 30 10:09:02 vbox01 CRON[10696]: (root) CMD ( [ -x /usr/lib/php5/maxlifetime ] && [ -d /var/lib/php5 ] && find /var/lib/php5/ -type f -cmin +$(/usr/lib/php5/maxlifetime) -print0 | xargs -n 200 -r -0 rm)
Mar 30 10:09:03 vbox01 gdm-simple-slave[10694]: WARNING: Unable to load file '/etc/gdm/custom.conf': No such file or directory
Mar 30 10:09:04 vbox01 NetworkManager: SCPlugin-Ifupdown: devices removed (path: /sys/devices/virtual/net/tun0, iface: tun0)
Mar 30 10:09:04 vbox01 pulseaudio[10697]: pid.c: Stale PID file, overwriting.
Mar 30 10:09:05 vbox01 pulseaudio[10697]: main.c: Unable to contact D-Bus: org.freedesktop.DBus.Error.NoServer: Failed to connect to socket /tmp/dbus-dAvsZz61kd: Connection refused