We completed our interviews and oath ceremony this week. I speak from my personal experience only but I believe when you submit your N-400 applications, they try to keep track of both spouse's cases together. We filed 3 years ago and both our case statuses would change at the same time, even though I know I was the primary applicant responsible for the delay due to name and security checks.
My citizenship journey is over. I am a naturalized US citizen as of 09/23. Things that I learned from this forum gave me confidence to complete the journey. I must detail my experience for the benefit of the posterity.
Seattle USCIS DO naturalization interview experience
My wife and I went for our interviews yesterday which went well and we did attend a same day oath ceremony at the Seattle office yesterday - we are finally US citizens. Here is my experience:
Hi all,
I wanted to share my wife's N400 interview experience which had lots of continuous residency issues. it is thanks to this forum's contributions that we decided to apply anyway in spite of the fact our own lawyer advised us against it. and she got approved and had her oath on the very same day!
USCIS published improved forms in easier-to-use formats and with new data collection technologies:
My interview was scheduled on 09/21/2012, went into the USCIS office 20 mins before appointment. I waited ~40 min after the appointment time passed and was interviewed by an officer. The officer was polite. I was asked almost all questions on my submitted N-400 and then wrote/read English sentence. After answering 6 civic questions correctly, I was told I passed the interview.
I finally had my oath ceremony today at Cadman Plaza US District Court, Brooklyn.
Hi Everyone,
It's been a while, but I felt the need to share my naturalization time line and interview experience. My recipet notice was received and/or dated approximately May 16th 2012 and I received a preliminary interview notice letter advising that I should bring to my interview my state issued ID card and certified copies of my arrest. I am not sure when I received the actual interview letter, but maybe three weeks before my interview date which was sceduled for June 21st, 2012 at 3opm at Federal Plaza.
Just came back with my wife from biometrics. I live near Buffalo NY (like my nickname doesn't hint that 
), so it took us just 20 min to get there. You can park in the back of the building as there is paid parking ($15 for the day, no hourly option- ripoff!) As we entered the building at around 8:15 AM we were asked by the guard to state the nature of our visit, we showed him the fingerprint appointment notices, then we had to go through the metal detector.
On Saturday, March 9, from 10 a.m. – 3 p.m., U.S. citizens may apply for or renew their passport book or passport card at any one of 25 passport agencies/centers that are open to the general public. No appointment is necessary on March 9 – normally, U.S. citizens would have to make an appointment at passport agencies.
For more information on this please click here