Flakk wroteedit: I just remembered, Modern Warfare 2 multiplayer works on a Peer2Peer system similar to torrents or limewire or whatever. So you dont connect to a host, you connect and download and upload data to every user in the same game you are in. and thats why i guess its laggy.
Wrong.
You download/upload your waypoints/actions to the HOST which forwards it to everybody. That's why there is this person with 4 green bars while everyone else is 3 or below on some games.