MJW,
No problem for the testing and help, it's what we do.
I just logged in using Chrome and didn't have any Captcha issues. Not sure if it's off completely, or if you found a way to disable it for JFBConnect. I'm not familiar with the extension you're using to prevent spam registrations, but if you need help investigating how to make it and JFBConnect play well together, let me know.
As for the Invite module, with both Chrome and Firefox, I logged into Facebook and went to the WebLinks page. I reloaded each about a dozen times, and it loaded properly every time. Are you still seeing the intermittent loading problem?
In neither browser, did I see a Javascript error (which can commonly cause the loading problems) or really anything else that would be the likely culprit. If you are able to recreate the issue more reliably, I'd suggest trying to override the template and see if the issue persists. This may help narrow it down further. If you use the following link, it will load your page in the default Joomla template. Let us know if you can (or cannot) still see the loading issue when using this template:
www.ariegeaudeforum.com/index.php?option...emplate=rhuk_milkway
Thanks, and good luck!