I think that I got an e-mail saying that they had recieved my secondary... I then got an e-mail saying that I had an interview (this was in early september, I sent my secondary in mid-August) The snail-mail version came a week and a half later. I am pretty sure they only do interviews on Wednesdays so there are big groups of interviewees, they may be getting bogged down now because of the August-MCAT people.