Is it really true that turning on a microwave with nothing in it will break it?

Even more worrying - will it catch fire or explode?

Don't they have a safety cutout? Can't it sense the Klystron overheating, or a build up of microwaves over a certain level?

I have purchased a new microwave which has an easier to grab control. I'm concerned one of my pet parrots will switch it on! (Seriously, they do stuff like that)

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http://www.petersparrots.com http://www.insanevideoclips.com http://www.petersphotos.com

A Pakistani arrives in London City all excited. He stops the first person he meets. "Good day, Mr. British, thank you to accept me in Your nice country", but the person interrupts and says: "I am not British, I'm Chinese."
The Pakistani continues on his way and meets another passer-by. "Thank you Mr. British for to let my family and me stay here... " Again, he's interrupted before finishing his sentence. "I no be British, I be Turk!"
He goes a little farther and meets another person and greets him "thank you for letting me come to your beautiful country." ... "I'm not British, I'm Kosavon."
"But," answers the Pakistani distressed, "where are the British??"
The Kosavon looks at his watch and says ..... "Probably at work."