After having some initial trouble over the weekend resulting in server outages, it appears that Battlefield: Bad Company 2's online servers will be coming back online. The issue affected the PC, Xbox 360, and PlayStation 3 versions of the game.
Battlefield: Bad Company 2 is a sequel to the original Battlefield: Bad Company, which features an extended version of the original game's engine, which allows for the game's environment to be fully destructible, For example, this allowed buildings to fully collapse instead of just having sections of the wall blown out.
Even though the original issue was resolved over the weekend, EA and DICE worked worked earlier today to add new optimizations to the servers to alleviate the extra server load, which according to the publisher was "400% higher" in simultaneously online users than in any other previous title in the series.
The PC and PlayStation 3 version were the least affected, with small outages here and there. The Xbox 360 version was the most severely impacted. All versions should be back online and will be closely monitored for any future events, according to EA.