Whilst nowhere near a fair way south of a certain Mediterranean island and certainly not waiting around 40000' for an unknown contact to descend to our level ('cos we certainly couldn't go where he was) and, of course, this was not 1991 with 'stuff' going on down the road, I happened to get a speck of dust on my F95 camera. Luckily that's all it proved to be and was definitely not a 'special flight' returning to a certain Mediterranean island