The Battlefield Heroes Website has word that demand for beta keys has put their server out of commission, and they are embarking on maintenance to bolster it for future demand:

Turns out there were so many people waiting to win a Beta key that the server basically...up and croaked.

Talk about things going horribly right.

We'll be doing some maintenance over the next day or two; we want to make sure that the site can handle all you Battlfield Heroes enthusiasts.

Apologies for the delay, but don't worry, we'll be back!