FILE - In this Wednesday, Sept. 28, 2011 file photo, a part of the Maroun Petrochemical plant is seen, at the Imam Khomeini port, southwestern Iran. Technicians battling a complex computer virus took ... more 
FILE - In this Wednesday, Sept. 28, 2011 file photo, a part of the Maroun Petrochemical plant is seen, at the Imam Khomeini port, southwestern Iran. Technicians battling a complex computer virus took the ultimate firewall measures shutting off all Internet links to Iran's oil ministry and the terminal that carries nearly all the country's crude exports. (AP Photo/Vahid Salemi, File) less 
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Associated Press | Photo By Vahid Salemi, File
Wed, May 30, 2012 2:49 PM EDT