LOG:
patrick@linuxmint ~ $ gnome-shell --replace
Fensterverwalter-Warnung:Log level 8: shell_tray_manager_manage_stage: assertion `manager->priv->stage == NULL' failed
Fensterverwalter-Warnung:Log level 16: Unable to register authentication agent: GDBus.Error:org.freedesktop.PolicyKit1.Error.Failed: An authentication agent already exists for the given subject
Fensterverwalter-Warnung:Log level 16: Error registering polkit authentication agent: GDBus.Error:org.freedesktop.PolicyKit1.Error.Failed: An authentication agent already exists for the given subject (polkit-error-quark 0)
      JS LOG: GNOME Shell started at Sat Dec 17 2011 21:27:11 GMT+0100 (CET)

(gnome-shell:540): St-WARNING **: percentage lengths not currently supported

(gnome-shell:540): St-WARNING **: percentage lengths not currently supported

(gnome-shell:540): Clutter-CRITICAL **: clutter_actor_queue_relayout: assertion `CLUTTER_IS_ACTOR (self)' failed

(gnome-shell:540): St-WARNING **: percentage lengths not currently supported

(gnome-shell:540): St-WARNING **: percentage lengths not currently supported

(gnome-shell:540): St-WARNING **: percentage lengths not currently supported

(gnome-shell:540): St-WARNING **: percentage lengths not currently supported

(gnome-shell:540): St-WARNING **: percentage lengths not currently supported

(gnome-shell:540): St-WARNING **: percentage lengths not currently supported

(gnome-shell:540): St-WARNING **: percentage lengths not currently supported

(gnome-shell:540): St-WARNING **: percentage lengths not currently supported

(gnome-shell:540): St-WARNING **: percentage lengths not currently supported

(gnome-shell:540): St-WARNING **: percentage lengths not currently supported

(gnome-shell:540): St-WARNING **: percentage lengths not currently supported

(gnome-shell:540): St-WARNING **: percentage lengths not currently supported

(gnome-shell:540): St-WARNING **: percentage lengths not currently supported

(gnome-shell:540): St-WARNING **: percentage lengths not currently supported

(gnome-shell:540): St-WARNING **: percentage lengths not currently supported

(gnome-shell:540): St-WARNING **: percentage lengths not currently supported

(gnome-shell:540): St-WARNING **: percentage lengths not currently supported

(gnome-shell:540): St-WARNING **: percentage lengths not currently supported

(gnome-shell:540): St-WARNING **: percentage lengths not currently supported

(gnome-shell:540): St-WARNING **: percentage lengths not currently supported

(gnome-shell:540): St-WARNING **: Did not find color property '-arrow-border-color'

(gnome-shell:540): St-WARNING **: Did not find color property '-arrow-background-color'

(gnome-shell:540): St-WARNING **: Did not find color property '-arrow-border-color'

(gnome-shell:540): St-WARNING **: Did not find color property '-arrow-background-color'

(gnome-shell:540): St-WARNING **: Did not find color property '-arrow-border-color'

(gnome-shell:540): St-WARNING **: Did not find color property '-arrow-background-color'

(gnome-shell:540): St-WARNING **: Did not find color property '-arrow-border-color'

(gnome-shell:540): St-WARNING **: Did not find color property '-arrow-background-color'

(gnome-shell:540): St-WARNING **: Did not find color property '-arrow-border-color'

(gnome-shell:540): St-WARNING **: Did not find color property '-arrow-background-color'

(gnome-shell:540): St-WARNING **: Did not find color property '-arrow-border-color'

(gnome-shell:540): St-WARNING **: Did not find color property '-arrow-background-color'

(gnome-shell:540): St-WARNING **: Did not find color property '-arrow-border-color'

(gnome-shell:540): St-WARNING **: Did not find color property '-arrow-background-color'

(gnome-shell:540): St-WARNING **: Did not find color property '-arrow-border-color'

(gnome-shell:540): St-WARNING **: Did not find color property '-arrow-background-color'

(gnome-shell:540): St-WARNING **: Did not find color property '-arrow-border-color'

(gnome-shell:540): St-WARNING **: Did not find color property '-arrow-background-color'

(gnome-shell:540): St-WARNING **: Did not find color property '-arrow-border-color'

(gnome-shell:540): St-WARNING **: Did not find color property '-arrow-background-color'
gnome-shell-calendar-server[563]: Got HUP on stdin - exiting
Bus-Zugriffsfehler (Bus-accesserror)