"On June 17, 2010, Sergey Ulasen was in his office in Belarus sifting through e-mail when a report caught his eye. A computer belonging to a customer in Iran was caught in a reboot loop — shutting down and restarting repeatedly despite efforts by operators to take control of it. It appeared the machine was infected with a virus."

I am curious as to what in Stuxnet code and/or the client computer caused this. From the rest of the article, Stuxnet went to great lengths to stay undetected. Anyone has clues ?