In the first quarter of 2001, the Sun switched magnetic poles.This occurs every eleven years. Prior to this the Sun's north magnetic pole was at the north rotational pole. Now the Sun's north magnetic pole is at its south pole. Since opposite poles attract, the magnetic poles of the Earth and Sun are now at their most stable.
Just about the time of 2012 Winter Solstice, the Sun's poles will switch back. During this switch there will be a tendency for the Sun's magnetic field to pull the Earth's field with it.
If the Earth's magnetic poles switch, this would put stress on the planet aggravating earthquakes and volcanos, not to mention destruction of the electrical power distribution grid. And, if the switch happens fast enough don't ever expect your computer to work again. But if you have old tube type equipment, keep it. It should survive just fine. It will work if you can find electricity.