Yesterday my wife's 485 got approved. Her approval was later than me more than one year. Our experiences had a little bit complicated. I like to share with you guys. hope it is helpful to someone.
I140 and I485 were ted together at the end of 2004.
FP: 3.2005(code 3)
I140 and my 485 were approved together on 5.8. 2005
my wife was required to take FP again on July 10 2006
Her 485 was approved on Aug 9th 2006.
Asked lawyer why my wife's 485 was delayed. He thought her name is two words and very common.
Good luck to everyone.