Facebook Plugin Signup button goes to http://r.php/

Hi,

I’m using Facebook Plugin – Recent Activity. It all works fine except for the Facebook ‘SignUp’ button.

It shows the following:

This link might be malicious. Please follow it with care. Learn more about keeping your account secure.

The link you are visiting: http://r.php/

I believe the real URL it’s meant to go to is:
https://www.facebook.com/r.php

It seems to be cropping off the entire domain name and treating the URL as the actual domain however. Any suggestions or bug fixes would be great, cheers.

http://wordpress.org/plugins/facebook/