I've always been told it's common, but have never experienced it myself after probably 300 flights in my lifetime.
I just had a friend today who had one at ORD
about an hour ago. It was Iberia 6275 from MAD
, and was basically on the runway and pulled back up. I would love to know the reason, but apparently the pilot spoke poor english, and the only thing my friend got was that there was a problem on the runway.