Additional Review letter
I am also in similar situation. I applied I485/I140 09/30, 2005. 140 approved within 3 months, but I485 still pending. June, 2007 i heard from info. pass everything is clear except namecheck for me and my wife, stuck since 2005. I sent letters to cong./senate/FL for the Namecheck. My wife (derivative) did SR and got reply on July 20th says its pending. I put SR on July 5, 2007 and got reply on Aug.22, 2007 saying '...actively processing...Additional Review...contact us within 60 days". I don't know what it is. does my namecheck cleared and really they actively process my case, i don't know. anybody have any idea.
Also today I got email from CRIS saying our EADs (3rd) are approved (card production), wepplied EAD/AP on mid of July.