어느 service center로 route됐느냐에 따라도 차이가있고요
best thing to do at this moment is to wait patiently; it will come soon or later
if you have already taken biometrics, you are probably next in line.
good luck!
on the side note, out of the 180,000 applicants, 4600 cases have been approved so far.
http://www.uscis.gov/USCIS/Resources...ACAOct2012.pdf