Argh. So, not only does one of our frontend servers decide to lose it's UDP socket (to itself) at some point in the middle of the night, but a code commit at 2am to do a referer check on new account creations managed to forget that a referer from the new account form itself would be valid. So, all new account creation attempts since 2am have just been looping back to the AUP page. Argh! Never do code commits of logic at 2am!
