i485 got ref(employment verification letter) on june 18,2006, approved july 6,2006 and green card received on july 12, 2006.
however, my wife's ref for i485 was mailed out on june 6, 2006 but still hasn't got it. i assume it is for medical exam because she was pregnant and cannot take x-ray in last sep.
good luck to everyone here. if you have question, please free to ask.