1. It is a good sign if an IO has told you if your background and name check are done at that you are in queue for the interview. Try to get a date you were placed in queue if you can. However, be aware that the queuing "order" seems to be based on nothing and to signify nothing.
2. People who applied in the period you did, roughly between late July and early December 2007, are seeing very random timelines. I would say about half of us on this forum who fall into that period have ILs, and the other half not, and in no particular order of priority date.
3. People who applied from late December 2007 to present are generally seeing very fast timelines, sometimes as little as 90 days.
4. From the reports here, with one exception, ILs for NYC have arrived at the same time of month for the last several months: roughly between the 15th and the 23rd.
5. IL to Interview is about 2 months.
6. Interview could be in Garden City or Manhattan. There have been no reports yet of weekend or evening interviews in NYC.
7. There have been reports of several (possibly 22) new Adjudication Officers who recently started in NYC, to deal exclusively with the naturalization backlog. However, it is likely that they won't be done with Basic Training until late July.
8. Interview to oath is about 1-2 months. Some people are getting interview letters the day of the interview, but more are getting them in the mail.
9. Oath could be in Brooklyn or Manhattan, and recently there was a report of Middletown. I won't be surprised if the fed courts in Islip and White Plains also get involved.
10. Official timelines are utterly meaningless.
i was thinking ny office is the most slowest one.