We are testing the password reset feature and I had a user who could not enroll in the system. He sent me his password and I enrolled him fine. Since he was a Mac user and I had just used IE, I asked him to retry setting his security questions using Firefox. It worked. Then I had him try and change his security question in Safari. It told him he didn't have rights.
Not sure if this is well known, or if I'm the first.
Adam in DC