Citizenship interview

[huonglp]

I applied for US citizenship based on 3 yrs marriage w/US citizen on 8/31/06 at Texas Service Center. I got finger print on 9/16/06. From that date, I haven't heard anything from USCIS. I called Customer Service, they said they are waiting for FBI check. Do you have any ideal how long should I wait. I will move to VA shortly, should I submit to change mailing address? My old address in TX is my sister's house so I don't worry abt losting mail. Do you have any advise, it is almost 1 yrs for me to wait.
Thanks