Same here. I pre-regged for Saturday like 2 days after it opened and havent heard anything. A friend of mine who pre-regged for saturday a few days after I did has heard back.
I heard there was a server/form glitch that missed some forms, and its rumored that might be one of the problems. I'm stressing too though. Whether I should bother going on saturday morning or just go for the friday one. Blah.
Good luck to all of us who are stressing about not receiving confirmation.