I got an email that RFE was sent for my wife's I-130. How long does it take and what could the possible reason be?

It typically takes 7-10 days to receive RFE. If you have lawyer, the RFE would typically go to them. There could be many reasons for RFE. Please check the GC tracker foe various RFE examples http://www.mygcvisa.com/tracker/

I received the RFE, they asked 2 PP photos of mine. How long does it take for the USCIS to process the RFE if I send the reply tomorrow. Thanks!!

It takes typically 7-10 days to process RFE response.

Thanks for sharing the details...

Amazon - I read the following prediction for F2A, what does early 2014 mean? Jan or March 2014. PD is Sep 12 2013 and was wondering when can we expect it to be Current for us. The Department of State published their predictions on monthly cutoff date movement for early 2014: F2A: No forward movement, the Mexico cut-off date is likely to retrogress at some point Thanks Rajesh

It means F2A is not likely to move forward and Mexico can retrogress earlier than other countries.