I received a letter from CIC Mississauga yesterday, dated March 8, 2011 saying they received my RPRF and that the VO has been notified that it is paid. I had already known they processed it more or less since I was able to log into e-cas using the receipt number from it on March 11.
But nevertheless, because someone else (88mv) on this forum emailed Buffalo to confirm they received the notification of payment (and received an answer quickly), I did that too, last night, and am waiting to hear back from them. I figured it wouldn't hurt to know that the later payment of the RPRF isn't holding up my application. Also, I thought maybe sending them an email might prompt them to send PPR via email rather than mail. Although in 88mv's case, it seems they got it via mail. Regular mail is just sooo slooooow.