hackphil@p733:~$ sudo /etc/init.d/networking restart

Reconfiguring network interfaces...Error for wireless request "Set ESSID" (8B1A) :
    SET failed on device ra0 ; Network is down.
Error for wireless request "Set ESSID" (8B1A) :
    SET failed on device ra0 ; Network is down.
done.
hackphil@p733:~$