Just wanted to pop in and say a few things:
1. For those of you with 4+ interviews this early in the year, I hope you realize how extraordinary that is. Regardless of what happens, you should be very proud of that.
2. For those of you who have only one interview, huge congratulations. The difference between one interview and zero interviews is enormous. If you one interview, you have passed muster at one school, which definitively means that there is nothing "wrong" with your application (something that I worried about immensely before I got my first interview).
3. If you don't have any interviews, worry not. You are still two months away from when the SDN dogma says you are supposed to "start worrying" and it is still September. Lots and lots and lots of things can happen in the next few months. Realistically, it's probably just that your numbers are a little more on the average side and the schools are prioritizing the applicants who have obscene scores, life experiences, or whatever that particular admissions committee cares about. It will happen.
I wish you all the very best of luck!