Liam,
On the page you linked to, there are multiple extensions trying to load and initialize the Facebook Javascript API Library. There should be only one, JFBConnect.
If you open the source HTML of the page you linked, you can search for the following things that need to be fixed:
* "all.js" - This is the Facebook JS Library, and should only be on the page once. On your site, it's there 3 times. None of the 3 times look to be from JFBConnect. Please disable what other extensions are inserting that code and make sure the JFBCSystem plugin is enabled.
One looks to be from JomSocial. For basic integration information with JomSocial, see:
www.sourcecoast.com/jfbconnect/docs/thir...ration-for-jomsocial
I'm not sure where the other 2 are coming from.
Hope that helps get you started,
Alex