MY case:
NIW EB2 I140/I485 cocurrently filed on 2/16/2005 to TSC.
I140 was approved in 5/2005.
10/2005 first FP,code 3.
7/2006 PD became current.
8/2006 called TSC and NSC, case was stuck in FBI for background check.
10-12/2006 Contacted Congressman and Senator for help, no positive response.Contacted FBI by email many many times for NC status, no any response.
12/2006 contacted First Lady for help.
2/2007 got a response from First Lady's office, the request for expediating NC was assigned to FBI.
3/2007 got a letter from FBI indicating NC was finished and forwarded to USCIS.
4/2007 second FP, code 3.
4/20/2007 I485 was approved.
4/24/2007 card was sent.
Long journey to settlement.
Game is over!