I filed the WOM on 3/6/07, served defedent on 3/8/07. Got 2nd fingure print on 3/26, did 2nd FP on 4/11/07, GC approved on 4/16/07 and got card today. My 485 RD is Nov 2005. I never talked to the US attorney for my case, today after I got the card, I called her. I wasn't too sure it was her accelerate my case, today I asked her, she is a super nice lady, she told me she pushed my case through FBI and USCIS. I told her I was very grateful.
I didn't put too much hope when I filed the case, becasue I saw so many MTD, extension, denial, etc. My court only has 6 of WOM from Jan 2006 till now. I think that might be the reason they are nice.
I did pro se, so the only price to pay is $350 court filing fee.