I say let the sending of the ticket to someone who has a MP version of the game so they can check if it is actually still down when sending the ticket. I dont have the game at the PC I am currently on, so I cant.
Then again, N3V should have noticed by now that ichat and MP are down since it has been for over 2 days now.
I doubt sending a ticket now is of any use anyway; If it aint back working by now I assume it wont be fixed before Monday as the offices in Australia are closed by now.