Yeh lol, and maybe a page that helps people fix there port problems! oh and here are signs if you have the problems: 1:you are in a game with 3 (or more) people and when the loading is done it just sits there, nothing happens for around 10 seconds! 2: you lag with 3 or more people in a game 3: people cant join your games! if you get affected by most of thease then yes! u must open your ports!