The Battlefield Blog announces plans to take down EA servers a couple of times for maintenance, saying this will affect all three Battlefield: Bad Company 2 platforms. They say they will "come up with even more hardware with more capacity to handle all the BFBC2 traffic. Once the maintenance is complete you will experience an improvement to your online experience." The update also outlines some stats from the battlefield:

Since launch a week ago, BFBC2 has already put EA servers through the following stress:
The 4 different soldier types have gathered a score of more than 34 Billion.
There's been more than 400M kills made.
1.3M roadkills
Squads and Teams have assisted each other to 6.2 Billion points.