Yeah, I tried to forward about a dozen ports on mine and had similar problems. This was in the first five minutes of plugging it in and having it registered to the account, but it did the same about a day later.
You see, what Virgin have failed to tell everyone is that the Super part of the name is ironic, and they're playing a five-month early extended April Fools joke on all their customers.
(NOTE: I'm counting months from rough time of SH release, not from today obviously.)