USCIS has removed from the following page its previous announcement that all i-485 should be submitted to NSC:
http://www.uscis.gov/graphics/formsfee/forms/index.htm
According to the following page (updated June 15, 2006):
http://www.uscis.gov/graphics/formsfee/forms/i-485.htm
If you have already filed Form I-140, Immigrant Petition for Alien Worker, submit your employment-based Form I-485 that approved or is currently responsible for adjudicating your Form I-140 petition.
This is good news to all you NSCphobia:-) My I-140 was submitted to CSC, and later transfered to TSC. Therefore, I will submit my I-485 to TSC on July 1 (my PD is Feb 2005)