Zen,
That's the really old way, and while it works, it can have issues depending on the page you're using it on. I'm assuming you're using a very old version of JFBConnect, which, if so, we'd highly recommend upgrading as there are many changes within Facebook that the newer versions are compatible with. Depending on what version you're using, some features may work, and others can be flaky, especially regarding comments, as that was completely changed by Facebook earlier this year.
Additionally, support is for subscribers only, so if you run into any other issues, you'll need a subscription for help.
Good luck,
Alex