i posted this question on another non XK forum. one of the guys there runs a repair shop, he said he had just replaced a half shaft on the drivers side on a 07WK for a simular noise. the guy brought it in during the last cold spell becuase the CV was poping and cracking on acceleration. overall he said the shaft was in good shape and felt fine. after he replaced it about 60% of the noise when away " enought to here the passanger side". my turck has 90k on it do you think this could be an early warning sign of wareing CV's?