www and non-www facebook descriptions different

Hi there, I have just installed and setup WordPress SEO on http://adventuresinpubs.co.uk – when I cut and paste the homepage url into a Facebook status update it shows the Goodnews logo (which I thought I had replaced with my own). If you use the www. version of the domain http://www.adventuresinpubs.co.uk it shows up correctly in Facebook.

At a post level when using http://www.adventuresinpubs.co.uk/beer/brewdog-punk-ipa/ or example it pulls the feed perfectly however, when using the non-www http://adventuresinpubs.co.uk/beer/brewdog-punk-ipa/ it pulls the wrong description.

Have I set something up wrong? As I would like them to both display the same.

http://wordpress.org/extend/plugins/wordpress-seo/