Hi room3, I don't have a definitive answer but I guess this might very well be the case ... and that's probably happened to me too ...
I got +ve review from VO with interview waiver, request for POF, PCC, RPRF in January 2011 ... BUT no MR

... then everyone said in April 2011 visa quota is restored ... and I got MR in May 2011 ...
so even if you don't receive MR ... maybe you'll get something similar to what I got in January 2011 ... and that should give you an indication of where your file is heading ...
But looking at your 2nd AOR date (and also loveson's) I wish I wish you guys receive MR soon ... it's loooooong overdue