Thank you for your answer. I have seen this phenomena in the work of other shall I say "exceptionally expert" photographers such as your photography indicates you are. I suppose it must be characteristic of the edit software they use in common. Thank you, once again.
I'm no expert, trust me - very much still learning but thank you all the same. In fact this is one of the very first 'street' shots I've ever tried so I think more luck than judgement. I only use PSE 9 for editting.
If you look at some of the other photos in the Lanzarote set you'll see some not so good photos and even more reside on my hard drive!