login loops

Paolo,
Well that's a first. We've never seen that reloading loop on registration. Let's see how we can help though! When the page is refreshing, if I catch it right, the HTML I'm seeing is:That's not a page that would be created from JFBConnect to call a meta refresh. Do you know if you have anything on your site that would be intended for dynamic refreshes, that may just be working on the wrong page?

If not, please try the following and test after each one. If thing start working again without looping, let us know what step 'fixed' it, and then we can investigate more:
* Disable the "Automatically Log Facebook Users In" setting in JFBConnect
* Disable the JomSocial profile plugin
* Switch "Registration Flow" from "Full" to "Automatic".

In general, it seems likes Facebook is continuously calling the "User just logged in" javascript trigger. That should only occur once. Hopefully, the above will narrow down the possible cause and maybe give you a temporary solution as well.

Thanks,
Alex

Thanks for helping narrow it down. Still unsure why the loop is happening, but we'll try to do some testing with those settings. I already know that our automated testing recreates that scenario though, so I'm not sure how far we'll get.. it seems specific to your site for some reason since we've never seen it or heard it reported before.

As for:

Then I press again login with facebook in my application BUT it automatically reconnect me without asking. I think this is an error.

That is the correct behavior. Facebook and JFBConnect tries to be as 'frictionless' as possible. If the user is already logged into Facebook (in another tab) and has already approved your application, when they click "Login with Facebook", there's nothing to do. Authentication and approval have already occurred. So, there's no need for any popup, so they're automatically skipped.

Hope that makes sense,
Alex

If you leave the "Logout of Joomla Only" setting at Yes though, then the Facebook user is still left logged in. You can't login twice, and you can't 'switch' users. You have to logout and log back in one way or the other (either through your site or through Facebook).

Hope that all works for you, and good luck with your testing!
Alex