Pjing, Would you please help with this situation ?

Both my son and my I-485 have been approved lately and we received all our cards one month ago. But today I got emails ( sent at 4:15am) from USCIS alerting that "On January 8, 2008 we mailed the document to the address we have on file" with the online status as "Document mailed to applicant." What is this?

所有跟帖： 

• oops, sorry I got your name wrong, Pjiang -newgal- ♀ (0 bytes) () 01/09/2008 postreply 08:09:26

• Wait for document in mail - 回复：Pjing, Would you please help with -pjiang- ♀ (0 bytes) () 01/09/2008 postreply 08:18:45

• 回复：Wait for document in mail - -newgal- ♀ (270 bytes) () 01/09/2008 postreply 09:34:20

• I hope what happened to me will not happen to you! -老了老了- ♂ (0 bytes) () 01/09/2008 postreply 09:45:10