Just wanted to throw this out there, since it has come up a number of times now: You do NOT need to have all of your LORs complete in order to submit your application. In fact, you can even add/delete/edit your recommendations section after submitting. As of now, it is taking 2 weeks from when you submit until when your app is actually sent to the school. IMO, I think it's best to submit, and then just get your LORs to follow. There's no need to hold onto your app just waiting for the LORS, particularly when the whole PTCAS processing takes so long.