I was watching a game between Cai-Fu and Lee-Kim recently. During the entire game, both the teams took ample breaks either for water or to get the floor moped. The interesting part was they didnt pay much attention to the chair umpire when the break time was up. Even the commentator made a remark about it. It made me wonder, in the history of badminton has any team or player ever been penalised for delaying the game unneccessarily ? Can someone explain when is a service fault called ? I mean what is it that the umpire looks for ?