Analyst's note:  It couldn't have happened to a better location.

TEHRAN, Iran –  A complex computer worm capable of seizing control of industrial plants has affected the personal computers of staff working at Iran's first nuclear power station weeks before the facility is to go online, the official news agency reported Sunday.

[....]It was the first sign that the malicious computer code, dubbed Stuxnet, which has spread to many industries in Iran, has also affected equipment linked to the country's nuclear program, which is at the core of the dispute between Tehran and Western powers like the United States.

[....]On Saturday, Iran's semi-official ISNA news agency reported that the malware had spread throughout Iran, but did not name specific sites affected.