USPS server has been out since 9:25 EST ...

You can check the shipping servers for USPS, UPS and FedEx at:
http://www.shippingapimonitor.com/history.html

You might try calling USPS to see if there is any more information on this at:
Telephone USPS [IMG]resource://skype_ff_extension-at-jetpack/skype_ff_extension/data/call_skype_logo.png[/IMG]1-800-344-7779 FREE