I just received an IRIS letter stating this- Dear Mr. Cool Breeze- Thank you for your inquiry of December 08, 2011. A review of your records shows that you received a Notification Letter on November 28, 2011. A retroactive payment on December 1, 2011 for $528.00 and a regular payment of $941.00 was received on the same day. The two payments received on December 1, 2011 totaled $1,469.00 and your payment on December 30, 2011 was for $1,479.00. No other retro payments are to be received.