Here's complete N-400 process San Francisco.
=============
12/16/08 : Mailed application (did not think to use certified mail, so no tracking info)
12/23/08 : Received Date & Priority Date (As printed on NOA1)
01/08/09 : Check cashed, $675
01/09/09 : Received Notice of Action (NOA1), Notice Date: 01/05/09
01/10/09 : Application "touched"
01/20/09 : Received Fingerprint Letter (NOA2), Notice Date: 01/13/09
01/27/09 : Fingerprints taken in San Francisco
02/07/09 : Received Interview Letter, Notice Date: 02/03/09
03/20/09 : Interview
04/14/09 : Received Oath Letter, Notice Date: 04/10/09
05/05/09 : Oath date