O.k. Here's a story for you! FORGET THE UNPLUG THEORY - IT DOESN'T WORK!!
In 1997 we had our house struck by lightening - it hit the chiminey, blew the siding off and we ended up with about $5k of electronic stuff fried. The stuff that was plugged in made sense, but the items that were in the basement on or near the wall that the chiminey was on, did not make sense. These items were UNPLUGGED!!!!

The computer was unplugged - the motherboard was fried and the hard drive was wiped clean and a few other things. The radio was sitting on a shelf unplugged - nothing but static after that storm!!!
On Sunday, Skaneateles was hit by a tornado - very uncommon for this area. After 1997, I killed the power on everything major except the house (pool, AC, hottub, studo,etc) Left the house power on, the electrical faired well except this time it was the PHONES!!! I have to replace the modem in the computer - hard drive, etc. was okay, replace 2 phones, answering machine, and fax machine!!
I don't think there is a safe bet, or someone is out to get me!!

They just don't know that I'm stubborn as **** and won't give up!! My husband wants to build an underground house!!
my 2 cents worth of experience!
Elaine