This is the same problem that I mentioned in
this post
. Your site has a abnormal redirect on it that is redirecting to the same page. The warning that Facebook is reporting, "URL requested a HTTP redirect, but it could not be followed." is noting the same problem.
If you think it's JFBConnect, try disabling all of our plugins. You can leave the Comments module or tag on the page as that won't do anything without the plugins. With the plugins disabled, if the redirect still happens, then it's not JFBConnect.
Whatever it is, you'll need to find out what is causing that redirect and fix it.
Best of luck,
Alex