What is less awesome is that the sound in the multiplayer menus is strange. It gives off distorted bass. As if it is being played extremely loud. Over the level my headset can handle. Which it isn't. (same deal on my regular speakers) I've turned the ingame music volume all the way down to 5% and it still happens. The music is no louder than the campaign music. In the campaign (and it's menus) I've never had this happen.
This is not something that is just happening with my copy/xbox/headset/speakers. Friends who I play with have all been saying the same thing.