Yoda, did you file any application(like addr change) after REFP. According to BCIS , it takes them 30 - 60 days after the last transaction with them.
My REFP was done on 06/11/2003, but on 07/15/2003 my lawyer filed for his address change. So BCIS states my case would take 30 - 60 days from 07/15/2003.
I am not aware how much to believe BCIS.