The Unsafe Javascript is a common issue, but shouldn't be causing the problem. That's on Facebook's side of things, and there's not much we can do about it.
I looked at the source of your page, and saw a few odd issues. The profile ID you're using (the parameter in the module) is words. This should normally be numbers to link to a specific fan page on Facebook. When you say it works on the developer site, are you using the "URL" field on this page:
developers.facebook.com/docs/reference/plugins/like-box
If so, we don't currently support that method of linking to a Fan Page. You'll need to get the Fan Page's unique ID.
One other thing that could be problematic that I noticed is that the Facebook Javascript library, all.js, is being included twice on your page. I'm not sure where the 2nd instance is coming from, but if you could remove that, it may help. If you view the source, at the bottom of the page, you'll see
<div id="fb-root"></div><script src="http://connect.facebook.net/en_GB/all.js"></script>
Those lines of code are being included by JFBConnect (in a different way) higher up in the file. Having 2 divs named fb-root can be confusing Facebook's parsing of the page.
Let us know if this helps, or confuses you more!