to be honest with you guys, after the I-130, they asked me to submit new application I-230 and asked for documents after more than four months but that was in 2012 when the F2A was not current and they were going month by month with the bulletin. and it took me until June 2013 to get approved from NVC.
I don't remember specific dates but it really took me long time and drove me crazy, especially the SPONSOR application which was submitted by my uncle instead of my dad, and the repeated requests for already submitted papers.😠
So, to sum it for you guys. It took me from Feb 2012 (when i got approved for I-130) to June 2013 to get approved from NVC. and now i am still waiting for the interview appointment.
I hope it goes faster for you guys. and i am sorry for the late reply.