Xiaobaibu, please help on my case

Due to the address change issue, I have the following message on my case status:

Application Type: I485, APPLICATION TO REGISTER PERMANENT RESIDENCE OR TO ADJUST STATUS

Current Status: Notice returned as undeliverable.

On May 9, 2007, the post office returned our last written notice on this case as undeliverable. This can have serious effects on the processing of this case. Please call 1-800-375-5283 to update the mailing address so this notice can be re-sent.



I have changed the address and got the letter from USCIS. DO you know if this kind of message can delay my case processing? If so, how can I fix it?

Thanks a lot!!!