I was approved for SSDI last May 2010. I was told to expect a review Dec 2011. Shocked to see a 16 page questionaire already in late August, and an appointment with an IME doc as well. Sure scared me!
I had my doc write out a quick note telling of no changes (handwritten....just something simple) and in 2 weeks recieved a letter approving me and my next review will be Dec 2014.
Phew....not bad at all.
Best of luck to all.