Forum:Can't find match

Hi, I'm not sure this is the right section so if it isn't please tell me; I've got a strange problem with joining lobbies ever since I have downloaded apocalypse DLC on my ps3: after having lost 2 hours of my life waiting for it to download I can't join or enter any online game or lobby, on both the zombie menu and multiplayer, and when i search for a game it finds none, even if my connection had always worked perfectly up to that very day; any suggestions from any equally unfortunate people?