Thanks Lee for your reply,
Camera is Canon 70D, and I don't use RAW. Before the update it use to show 19 focus points all white in colour, since the update the left hand one on the centre row is green. I don't think it's the camera because when I look at the images on the rear screen it shows where I focussed, and most of my photos are captured in single point, centre. They are always centre even though photographing air craft sometimes puts my square in a piece of blank sky, but that is me. I'm baffled. Also if I may bend your ear, I seems to have lost the progression bar after doing a de-noise. Thanks again Lee for your help.