I just got mine yesterday (first time application) based on pending I-485. Very very fast!
RD: 04/24/2006
AD: 05/08/2006
Received in mail: 05/09/2006 (I am in Pennsylvania)
RD: 04/24/2006
AD: 05/08/2006
Received in mail: 05/09/2006 (I am in Pennsylvania)