I know one of my friends who got RPRF before MR - his MR was expected last year August (As he is Jan'14 applicant), he is still waiting for MR, however he got RPRF in Sep'14, he paid it immediately, then nothing came till date.
He ordered GCMS notes twice, nothing negative found and it is written in notes that his eligibility is "recommended passed"! He asked CIC by couple of emails too, they replied that his file is in good condition but sometimes visa officers take long time to initiate MR mostly due to security/criminality checks pending results, so he was advised to wait patiently! I hope your case would be lot better..all the best. Get your GCMS notes just to make sure that everything is normal or not.
Thanks.