Duplicate Messages for Facebook profile successfully connected.

When I try to login with Facebook, I'm brought to an error page that says there's a redirection loop. Are you seeing that as well, or do you get redirected properly and just see the repeated messages?

For the redirection loop, I'd suggest the following to narrow down where the issue is:
* Go into whatever SEF extension you're using and have it 'skip' JFBConnect URLs. Each SEF extension is different, so I don't know the specifics of how to do this, but the URL I see is definitely being altered by another extension.
* Disabling any Social Profile plugins you have enabled, temporarily, to see if that helps
* Set Error Reporting to 'maximum' and GZip compression to 'off' in the Global Config area. See if there is a specific error message shown when logging in instead of the generic error page.

Let me know how that goes.

Thanks,
Alex