Facebook came out with a completely new programming interface on May 1st, which is required for us to support. The 6.0.6 release of JFBConnect implements the new Graph API v2.0, which you can learn more about here.
The reason things are breaking on your site is because your template is re-including the older Facebook Javascript library. You'll need to disable the Facebook social features in your template and, ultimately, make sure that the following large block of HTML is not included in your page anymore:
<div id="gkfb-root"></div>
<script type="text/javascript">
//<![CDATA[
window.fbAsyncInit = function() {
FB.init({ appId: '171342606239806',
status: true,
cookie: true,
xfbml: true,
....Once you are able to disable that block of code, you should be good to go.
I hope that helps, but if not, or you run into any other issues, let us know.
Thanks,
Alex