mark@dev:~$ nautilus -q
mark@dev:~$ nautilus

(nautilus:5340): GLib-GObject-CRITICAL **: g_object_set: assertion `G_IS_OBJECT (object)' failed

(nautilus:5340): GLib-GObject-CRITICAL **: g_object_set: assertion `G_IS_OBJECT (object)' failed
Nautilus-Share-Message: Called "net usershare info" but it failed: 'net usershare' returned error 255: net usershare: cannot open usershare directory /var/lib/samba/usershares. Error No such file or directory
Please ask your system administrator to enable user sharing.

^C
mark@dev:~$