When this happens, sometimes i wonder why isnt the whole lobby gone? This happens usually becuase a player has shut off their 3ds or is having internet problems while in the middle of a race, but why are their some people left in the room? I know this because if it was a good room, I go to rejoin that player and he has a flag beside his name with some former members left. Idk why this happens, really weird. Although, the 3ds does have a lot of problems with internet so im not that surprised.