I have same problem.
I485s of my family got approved on Nov 6th,2007 and the approval notice have been received.No welcome mail and no card after that.
I filed the I-90 form on Feb,2008, pending now. It is said 6-10 months needed.
I-551 stamps, temporary green card so-called, have been received at local office. My son got SSN using this evidence.
Good luck!
I485s of my family got approved on Nov 6th,2007 and the approval notice have been received.No welcome mail and no card after that.
I filed the I-90 form on Feb,2008, pending now. It is said 6-10 months needed.
I-551 stamps, temporary green card so-called, have been received at local office. My son got SSN using this evidence.
Good luck!