Still waiting as well. Applied 10/31 - went complete on 11/16. DC-area resident.
Realistically, they are probably at the busiest point of the EA/ED mini-cycle right now. People who have heard already were complete earlier than me (mostly, at least). I still worry that they hate me for some reason, even though that's completely irrational at this point.
Truth is, we don't know why some of us haven't heard back yet. Hearing a little bit later than others doesn't have to mean that it's bad news coming. Hang in there.