I'm not sure about the Follow button. In the Javascript console, the following error message is appearing:
fb:follow failed to resize in 45s
That looks to be like a but with Facebook's Javascript library right now. We're investigating.
As for the jfbconnect.js file, I'm not sure what's happening then. Something is preventing the JFBConnect javascript file from loading, and you'll need to narrow down what that is. You can try re-ordering the JFBCSystem plugin to either a higher or lower ordered position to see if that helps. Make sure you clear your Joomla caches after any changes though.
If that doesn't help, you'll need to dig into why your template is removing our file. Again, it is being loaded with the standard Joomla templates, so it's not a JFBConnect issue, it's something else interfering with our operations.
Hope that helps get you started,
Alex