Update date change

[sha]

All, I have opened a profile on USCIS site so that I can get update online for the processing. Yesterday I did see that the date of last update for I-485 has changed to 03/11/09, however I did not get any email and there is no update online. What it could be?
I returned from India on March 8th 09. Immigration Officer on airport asked me specifically about my GC process. May be he reported something?

[sha]

my PD is not current yet. (EB3 - apr 2002)

[txh1b]

That is a soft LUD. You don't get an email on such LUDs. You get an email only when an action of some type is taken.

Every time someone opens your file there will be a LUD. May be pre-adjudication or a system wide update on LUD.