EAD approval not related to I-485 (???)
Folks,
My 2 cents... please do not read into too much about EAD approval with respect to I-485 approval.
My GC got approved on July 11, 2007 but EAD got approved on July 20, 2007!. yes 9 days after my GC approval my 4th EAD got approved. I thought it would be rejected/ignored/dumped/... but the truth is I have the fourth EAD.
Hope this helps.