Diplomats claimed late Monday major technical problems led to a temporary shut-down in Iran of thousands of centrifuges enriching uranium. These diplomats were quoted as saying by The Associated Press they had no specifics of the problem that led Iran in recent months to briefly power down the machines.
But suspicions focused on the Stuxnet worm, the computer virus thought to be aimed at Iran's nuclear program. Some sources claimed tihs virus was inserted to the Iranian system by the Israli intelligence.
Iran denies the worm caused any problems.