[Closed] wordpress issue...any experts

I have an interesting issue (and think I might be missing something here)

I have just been making a few changes to my site - nothing major, I just created a 'page' to go in the menu along the header (a copy of my links page from my main site).

Activated it, and hey presto, when you go to www.photographyonthehill.co.uk/blog

you end up at www.photographyonthehill.co.uk/littlebblackbook
(the latest page I created) - meaning I have lost the front page (using the autofocus+ theme) - although the same problem occurs if you activate another theme? (obviously dont wnat to be pointing customers to this, but instead want them to go to my front page)

I dont think I have done anything out of the ordinary, as I have created several pages on the blog and not had this happen. Nothing has changed in the general settings page - still points to the /blog. Tried it on a different browser and get the same issue

Anyone have any thoughts and any help would be greatly appreciated