Could you please tell me when you made a call for 2nd FP?
How long after you made the call you got the 2nd FP notice?
My case is exactly same as yours. 2/16/2005 PD.1st FP 10/2005, NC clear on 2/22/2007, 3/9/07 call USCIS for 2nd FP notice.
by the way, you call national Service Center,or Texas Service Center?