Yeah, I remember weve had this asked before on this forum. I think we concluded it is a connection problem unique to IL2 on ps3 where one person doesn't connect fully with the host so he is in the game but the hosts game doesn't know it and also tells the other players that player isn't in the game. I will try and find the thread. edit:
http://forum.1cpublishing.eu/showthread.php?t=17105