For the benefit of all. I called the IMmi guys this morning and the information i got from them was that, every time new information is requested the CO doesn't go back to the file in general for 8 weeks. From my case it is so, as my initial request came from the CO on September 24 and the next came in on November 20. So all i can say to myself is that be patient and same applies to many of the guys in here who have been waiting for a long while.