when i play madden on line i get as far as the second quarter and then it says i lost my connection to my peer does anyone no why

Were you by any chance winning when it has happened?

Common for the other player to disconnect when loosing, which results in a loss for you, unfortunately. Check out the forums on EA where they discuss this in depth. Sadly, you are not alone.

Good news is it has nothing to do with your connection, console or game.

Does this happen every time?
if not probably what Lucifer said just a case of bad sportsman-ship