Problem Solved A passenger jet taxiing down the runway, abruptly came to a stop, turned around and returned to the gate and stopped. Eventually, after an hour-long wait, the flight finally took off to air.   A scared concerned passenger asked the flight attendant, "What was the Problem?"   "The pilot was bothered by a noise he heard in the engine." explained the Flight Attendant.   "Well, I hope it's all sorted now." Replied the nervous passenger.   "Oh yes, it's fine now Sir, it just took us a while to find a new pilot and replace him." ==================================================================             ===========================================================================