They mailed me two acceptance letters as well, but one was from the admissions dean and one from the dean of the school. I got in relatively quickly, compared to what most of you are experiencing. Mailed mid-Nov. complete Dec. 17 in on Jan 18. My numbers aren't particularly great, 161/3.86 but I am instate. I don't know if that had any bearing on how quickly my app. was reviewed. I imagine they separate them into two piles as UNC receives about a 3:1 ratio of out of state vs. resident apps. I'm still surprised it's taking them this long.