A reason to worry? UPDATE- Got the cards!!

I bought a large graded gretzky insert lot on blowout forum and it was shipped on 27th(well at least the buyer said) priority mail with signature confirmation (as it was over $200).
Still no sign of the package and the tracking info says-
Priority Mail®
Depart USPS Sort Facility
August 29, 2012
GOLETA, CA 93199
Expected Delivery By:
August 29, 2012
Signature Confirmation™
Proof of Delivery
Processed at USPS Origin Sort Facility
August 29, 2012, 6:59 pm
GOLETA, CA 93199
Dispatched to Sort Facility
August 29, 2012, 6:38 pm
SIMI VALLEY, CA 93065
This package was supposed to be going from California to Iowa should I be concerned that its lost?
Still no sign of the package and the tracking info says-
Priority Mail®
Depart USPS Sort Facility
August 29, 2012
GOLETA, CA 93199
Expected Delivery By:
August 29, 2012
Signature Confirmation™
Proof of Delivery
Processed at USPS Origin Sort Facility
August 29, 2012, 6:59 pm
GOLETA, CA 93199
Dispatched to Sort Facility
August 29, 2012, 6:38 pm
SIMI VALLEY, CA 93065
This package was supposed to be going from California to Iowa should I be concerned that its lost?
0
Comments
Joe
I make it a rule to not worry for three weeks. But when I worry, I usually start a thread.
Successful transactions with: yankeeno7, raiderguy10, Beck6, CDsNuts, DaveP01, Dboneesq, Elemenopeo, gameusedhoop, georgebailey2, Goldlabels, gstarling, justmichael, etc
Working on.........
Tony Dorsett Master Set
1977 Topps Mexican FB (raw)
1957 Topps FB Set (raw or graded)
Need some 2007 A&G Regular Back Mini's PM if you have any and I will send my needs list.