"One woman came out of the lavatory drenched after a robotic arm knocked her off the seat and started the cleaning cycle prematurely."

http://www.huffingtonpost.co.uk/2014/04/16/frightening-toilet-exposing-women-woking-town-centre_n_5157922.html?utm_hp_ref=uk

Obviously Asimov's Laws of Robotics were not properly installed.

1. A robot may not injure a human being or, through inaction, allow a human being to come to harm.
2. A robot must obey the orders given to it by human beings, except where such orders would conflict with the First Law.
3. A robot may not injure its own kind and defend its own kind unless it is interfering with the first or second rule.

Perhaps it thought she was thirsty.