My friend shipped video tapes to me on 9/12 via Priority mai from Long Beach, CA. I called Long Beach CA PO, but they said Priority mail w/out delivery confirmation cannot be tracked, and they are not responsible for lost shipment. I have a reciept of transaction which was faxed from the friend. Is there any way to find or trace shipments? The person I talked at the PO wasn't helpful, as he kept saying USPS is not responsible. I have filed a claim on the net, also, but hasn't heard anything for 3 days. Thanks for any tips on this matter.