US Customs, How long?

Class: Express Mail International®

Status: Inbound Into Customs

Your item is being processed by United States Customs. Information, if available, is updated periodically throughout the day. Please check again later.

Detailed Results:

Inbound Into Customs

Inbound International Arrival, February 11, 2010, 3:13 am, ISC SAN FRANCISCO (USPS)

Foreign Acceptance, February 05, 2010, 4:56 pm

On EMS website says this:

2010-02-05 16:56:00 GUANGZHOU Posting

　 2010-02-05 19:06:00 GUANGZHOU Despatch from Sorting Center

　 2010-02-05 22:44:00 GUANGZHOU Arrival at Sorting Center

　 2010-02-05 23:44:00 GUANGZHOU Handed over to Customs

　 2010-02-06 02:04:00 GUANGZHOU Despatch from Sorting Center

　 2010-02-11 03:13:00 UNITED STATES OF AMERICA USSFOA Arrival at Sorting Center

　 2010-02-11 03:14:00 UNITED STATES OF AMERICA USSFOA Handed over to Customs

Every time I ordered takes around 24hrs or so to changed the status into a "inbound out of customs"

But this is the first time this happens. I was wondering what could be the reason of it because today is the 13th and information hasn't been updated.

Thank you!