Here is my time line.
1.We received your application for permanent residence on March 3, 2016.
2.We sent you correspondence acknowledging receipt of your application(s) on Aug 2, 2016.
3.We started processing your application on Aug 18, 2016.
4.Got request for PRPF fee and bio copy of passport with medical request and done the same day
5.Medical results have been received. (I got medical request on Aug 22,16 and made 5 Sep, 2016)
And I checked my CIC on Oct,19,2016, the Background changed to "in progress".
since waiting for my ppr