No no no, I was able to register, BUT as I was entering my credit card information, I realized that I hadn't put in my 3 digit security code. I expected the page to refresh and come back demanding that info, BUT, it didn't. I got my registration number, card was charged.
This would indicate to me that anyone with just a credit card number but not the 3 digit security code, would be able to register for PAX. It's still early in the process, so it can still be fixed. Maybe I haven't looked hard enough for the right email address to send to, but I haven't found one yet. Does anyone here know who involved with PAX would be interested in this info?