QUOTE(panamania79 @ Jan 10 2008, 09:22 PM)

In the last week,I have received four e-mails.USCIS claims that they are making important updates to my case.But when I call or log on to my account,these updates are nowhere to be found.Has anyone else experienced this ?

From the receipt to the approval of my petitions, I have only ever received one email from USCIS (not even an approval-email for them).
I have been thinking your question and I have to wonder if this is a tactic by USCIS to try to stop (or stall??) people who are outside of the processing time from phoning the customer service line to enquire about their petition(s).
After all, some people might be happy enough just knowing their petition was being "worked on" and would forego a call for the next week or so, to see if anything happens.
Another scenario, is that these emails could have been backed up in their system and could have been released later than they should have been. We know the email system is NOT working anywhere near as it should and, as I mentioned above, I have never received approval emails and I know others haven't either. I wonder if, at some point in the future, I might get a strange, out of place, approval from USCIS in my inbox.