Friday 4/3 I mailed a package in the morning with PBS DC (paid the .19cents and postage at the post office).  My understanding is this is a "quick credit" transaction as far as PBS is concerned and I get credit once it is scanned.  No credit has shown up yet. 

Does anyone know, when the post office is closed is the mail still being "worked on" behind the scenes?  Also is the scanning that the clerk did when I bought the .19cent DC yesterday not the scanning that the quick credit is waiting for? Does it need to be scanned again somewhere down the line before I get the credit?  

The credit usually will show in the PBS account after the USPS system transmits the data to the PBS server. This usually happens in the middle of the night. It may be delayed due to the holiday, or the USPS system may be down. Is the scan showing on the details button on your Main Account page?

...Even on the holiday, now it will be a skeleton crew for most areas but mail still moves.

Yes the dc is showing up on the details area but nothing on the credit registry yet.

Is it showing as Electronic Shipping info Received, or does it say something else?

By chance was the wrapper printed twice, Jeannie? First time without DC and the second time with DC? If that is the case, the credit will not be awarded until after the book is marked as Received by the other member.

Here is what the detail info says :  "7/3/2009 12:00 PM - Electronic Shipping Info Received"   And the wrapper was only printed once. 

It will probably just show up on Monday I guess.

The scan from the post office has not made it to PBS yet.

"Electronic Shipping Info Received" means you printed the wrapper. You should see "Acceptance" if it was scanned at a PO counter then one or more "En Route" as it moves through the sorting centers, followed by "Arrival at Unit" and "Delivered" if all goes smoothly.

It's Sunday afternoon and the credit just showed up on my Credit Registry! They must be working today.

There is always someone working at the post offices-they just aren't always open for customer transactions.  It just takes time for the PO system to update the PBS sytem and then the PBS system to transfer the credit.