Fox cancelled it. They lost their Futurama privileges! Adult Swim is on too late from the new episodes to gain the popularity to warrent even more episodes.
Are they getting the same people onboard? It never occured to me that they might not. I hope a good network picks it up. Adult Swim and Fox are out. Possibly TBS or Comedy Central?
At one point, and with great effort, look up. Then, looking extremly frightened, mutter "Oh God....." and look like you're about to seriously lose it. Compose yourself and continue.
It should give you an error if it can't connect to Nintendo's Wi-Fi service. MK:DS may take a few minutes to find opponents, depending on how many are using the service at a time... I'd leave it running for 10-15 minutes and see if it can find any opponents.