You need to turn auto sync of in the appI'd like to know the answer to that, Phil. I would also like to stop my mobile photos being uploaded to Flickr...do you know how to stop that happening?
Try clicking on the circular avatar on the top right of the home screen, the click settings and then sharing & extending. Select Facebook and uncheck Automatically share.... and that should work.
Did you sort it? I noticed on my it was off by defaultThanks Steve.