Trouble staying connected with friends online

having issues staying connected while playing online with friends. Is anyone else having this problem; join a game or have a friend join yours and randomly the game will kick one of the players to the main menu. It constantly happens and we all have great internet and hardwired connections. Yet for some reason the game just randomly kicks one of us. Its done it anywhere from 1 minute in game to 2 hours in game. Frustrating. Has happened since launch.