Let me preface this reply with my crappy numbers: GPA of 3.5 cum with barely 3.4 BCPM (U of Michigan UG, CMB major). Fairly decent MCATs (33R, nothing below 10). Saving grace: 2 years of research and some clinical exp, a couple of publications. Oh, and I was 24 at the time of my first app (this was 2 years ago).
First time applying: Interviewed right away at UW (I was a WA state resident at the time); second interview at Wash U in st louis in January. Immediate rejection from UW (even after years of research there!!!), and wait listed at Wash U until August..ultimately, rejection.
Luckily, I was smart enough (and wealthy enough) to secure a back-up option...I applied to a masters program at Georgetown (NOT SMP). Worked my a$$ off for a 4.0, but the jury is still out on how much grad grades *really* matter. Also some vol work during grad school, and some fantastic letters of rec (it is MUCH easier to get to know profs really well in grad school.)
Second time applying: Submitted AMCAS in August. Turned over most secondaries (12 schools) very quickly. Heard from Georgetown, Jefferson, and USC in Sept, interview dates 9/28, 10/5, and 11/29, respective. Heard from U of Maryland (my current state of residency) in mid-Oct, and recently iterviewed. Still waiting on the others - was put "on hold" at U of Chicago and GWU back in late Sept/early Oct. Other than that, I have not heard much from the other 6 schools.
Found out yesterday that I was accepted to Georgetown. I was elated.
However, I think Maryland may be my first choice right now, mostly for financial and facility-related reasons. I will have to wait until mid/late-Nov for a committee decision on that one. It'll be a tough decision to make, should I be admitted.
I hope this helps. Dunno if your numbers/circumstances are similar to mine. Basically, it's a good sign if you've heard from someone by now, but if you haven't, I wouldn't worry too much just yet. One thing you may want to do is *make absolutely certain* that your applications are complete. I had a big problem with one of my apps (my letters were sent but never received by the institution, and they waited 2 and 1/2 months to let me know). This could definitely hold up the works.
Good luck to you!