When clicking on the confirmation link sent via email, I am taken to the post_notification_header page which still says "Registration Successful" and once again given the message that a confirmation link will be sent to my email and to click on it to choose categories. And then am sent another link via email which takes me back to the same thing, in a continuous loop.
The subscription does not get confirmed, the email address is not added, and I don't get to choose categories.
Any ideas? I am using Twenty Twelve theme and WordPress 3.6.
Have tried this logged in and not logged in.