I read all the threads in this post and found it very helpful.
My case was interviewed about 2 wks ago. We were out of status when interviewed. We were asked to pick up the decision on the 14th day in the office (San francisco).
However we were told no decision yet.
We have to wait.
Thinking that we have waited for 1 whole year for the interview after application, another endless waiting was killing us.
I found most of the people here have got their approval letters finally, some in 2-3 months, some in 6 months and some in around 1 year.
Some unlucky guys were still waiting after years of waiting.
God knows how long we need to wait.
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Time Line:
Application: Nov 22, 2013
Fingerprint: Dec 10, 2013
Interview Notice: Dec 20, 2014 ( right, waited for 1 whole yr for this)
Interview conducted: Jan 8, 2015
Decision supposed to be picked up : Jan 21, 2015
Yet, no decision. Had to wait again...
Decision: N/A