Re: Power problems
"Right in front of the air intake for the system. Which duly experienced an airflow problem and switched off."
There's a similar story about one of the very old (washing machine size) hard drives and a cleaner who discovered that if you put the dustpan under the front ledge it would be automatically emptied for him.
Of course _WHY_ you would let cleaners into your data centre/server room is beyond me. We certainly don't and I've made a point of banning them from any technical areas containing racking. Techs don't kick up much dust and if they're tasked with cleaning up they make sure than things don't get broken.