Dragon Age: Origins server outages yesterday by saying it is working to resolve the issues on its end. BioWare's Rob Bartel acknowledged on the company's forums that the problems began over the weekend of April 9 when the servers experienced an "as yet unidentified failure."
The server issue caused connection errors, which flagged DLC content as unauthorized. Although we've yet to test this ourselves, folks on the forums say that the game is still playable in offline mode.
Bartel expressed that the company will update the thread once it knows more. A similar, unintended incident occurred only a few months ago due to server maintenance.