That doesn't seem right at all, seeing as you go to the US immigration centers to do the biometrics, at least that's what I've read this far, and haven't seen it taking that long from anyone, but looking at your prior posts, it seems you are applying under a different form?
Yes, my form is UKF which delivers to Liverpool and is based on family, not points or time based visas. On another forum I'm on, the only people who haven't had problems are ones in other countries (or the UK obviously). The exact words from the government were:
Thank you for your recent correspondence regarding your application.
There is currently no facility for biometric enrolment in the United States of America. It is expected to be available from October 2015 and a biometric enrolment letter will be sent to you as soon as this becomes operational.
I wrote them back stating the fact that it does't make sense that the Homeland Security application support centers in the US are the ones who process biometrics for visas, so why can't they process for citizenship applications as well?! I've been waiting 19 weeks and it's getting really absurd.