My I485 has been pending since 3/18/2005, now the online status says:
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Application Type: I485, APPLICATION TO REGISTER PERMANENT RESIDENCE OR TO ADJUST STATUS
Current Status: Card production ordered.
On June 1, 2007, we ordered production of your new card. Please allow 30 days for your card to be mailed to you. If we need something from you we will contact you. If you move before you receive the card, call customer service. You can also receive automatic e-mail updates as we process your case. Just follow the link below to register.
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This is not like approval notice, more like a garbage. USCIS computer system does this pretty often.