RSS problem

Hi, this might be a simple one to fix – I just don’t know where to look!
If I click RSS (website up and running) I get a message to say that it could not connect to the server at “http://http:/www…etc!
So it’s not hard to see the problem! It’s just that I can’t find where it’s picking up the extra bit of url from. The theme I am using is Pixeled but no responses from that quarter just yet, so I am hoping that the problem might be more generic. Any clues as to where to look please!!