MIAMI (AP) - Travelers arriving in the United States from abroad were stuck in long lines at airports nationwide when a virus shut down a U.S. Customs computer system for several hours, officials said.

Homeland Security spokesman Russ Knocke said the virus impacted computer systems at a number of airports Thursday night, including those in New York, San Francisco, Miami, Los Angeles, Houston, Dallas and Laredo, Texas.

Knocke said customs agents immediately switched to manual inspections. He declined to provide details on where the computer virus originated.

Hmmmm. I wonder if this is because someone didn't patch their MS05-039 vuln. It appears that some airports were affected too. I think that airports are on something AS-400 based. Anyone know which virus this was?