The airport itself points to problems with the fire safetysystem as the immediate cause of the delays: The fire safetysystem incorporates some 75, 000 sprinklers, but computer programming glitches mean it's not clear whether all of these sprinklers would spray enough water during a fire.
In January 2003 the Microsoft SQL Server worm, known as Slammer, infected a private computer network at David-Besse nuclear power plant in Oak Harbor, Ohio, disabling a safety monitoring system for nearly five hours, says the Nuclear Regulatory Commission.