weird LUD message, please help!

Dear All experts,
What's the following message mean? FYI, this is the notice for my daughter's, we ted our I-485 on Feb 28th, notice date is March 3rd. And so weird, this morning we got another LUD regarding her case saying unable to deliver the notice. totally confused.
And more weird thing is every same message they send to me three times!

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

Current Status: Document OTHER THAN CARD manufactured and mailed.

On March 22, 2007, we mailed the document we manufactured based on our
earlier approval of this case, and mailed it to the address on we have
on file. You should receive the new document within 30 days. If you do
not, or if you move before you get it, call customer service.

If you have questions or concerns about your application or the case
status results listed above, or if you have not received a decision from
USCIS within the current processing time listed*, please contact USCIS
Customer Service at [phone].

*Current processing times can be found on the USCIS website at
www.uscis.gov under Case Status & Processing Dates.
*** Please do not respond to this e-mail message."

所有跟帖： 

• 昨天才讨论过，好像是邮寄有问题或要补材料什么的时候发的 -HHLL- ♀ (0 bytes) () 03/23/2007 postreply 10:08:59

• Cong!! could you share your detail 485 info with us? Thanks! -win00all- ♂ (0 bytes) () 03/23/2007 postreply 10:25:26

• 祝贺啥呢？看昨天的讨论 -HHLL- ♀ (68 bytes) () 03/23/2007 postreply 10:40:57