Harvey,

Last summer I lost two motherboards to lightening. Both were turned on as we were not expecting a storm. We got home as it started and I said I should go turn them off and unplug. Too bad for me I turned on the TV to see how long it would last first. The lightening hit the cable line somewhere close by and went through the router to one computer and then through two hubs to get to the second one.

Now I unplug all the computers, laser. rotary, printer, etc when they forecast a storm. It was an expensive lesson.