aux belt failure

Hi all, I was driving yesterday when I heard a strange noise coming from the engine, sounded like a rough bearing and squeaky belt. I pulled over into the nearest lay-by checked under the bonnet and saw nothing untoward. Decided to turn around and take the car back. Car engine seemed fine and...

So after my recent aux belt failure slipping the timing on the Clio, I was just curious as to how often this actually occurs on the sport engines. If relevant please choose a poll option and post in the thread with what engine this occurred on and the scenario of how it happened.