Congratulations Naas!
Sorry to sound ignorant - but I haven't seen the NOA up close (it's the I-797 right?). Is there a file number or anything on it that allows you to track your application online, or do you get that notice later, I wonder. I'm itching to be able to follow my case online!
Dan, I'm the same with updates. I must have checked my bank account 20 times today to see if the cheques had been withdrawn, LOL.
Naas - did you get your certified mail return receipt back yet? If not, that's pretty hilarious.
The NOA receipt will contain a number. Like MSC-12-123-12345. You will be able to use that on USCIS site to get the status.
I heard that for some cases it took a while for that status to be available online. On my situation it worked the next day.
Maybe they fixed whatever problem they had