Mine went fast, I guess
Here are my details:
Service Center:CSC
DO : SACRAMENTO
N-400 mailed : 01/07/06
Check Cashed: 01/20/06
NOA Date: 01/25/06
NOA Received: 01/27/06
FP Notice Received: 02/14/06
FP Date: 03/02/06
Interview Notice Received:04/13/06
Interview Date:05/10/06
Oath Notice Received: 05/10/06 (couldn't attend, had to fly to LA, asked them to reschedule for 05/19/2006. They lost my paper, went there on 05/16/06 got oath notice for 05/19/2006. VERY NICE PEOPLE!)
Oath Date:05/19/2006
I guess it went all fast compared to the rest? Maybe because my parents just did theirs 5 months and a month before me, so they had my stuff already ready.