Their idea of a punishment is no hot water for 10 minutes.
They really need to implement BB Australia's Strike rule. There, anyone discussing nominations gets an official strike, three strikes results in ejection. Granted, for other rule-breaks (such as no mic) the punishments are less severe, but I'd be happy for strikes to be handed out simply for taking your mic off to have private discussions.
It goes against the whole idea of the show. Want to talk privately? Don't go in the Big Brother house!