Los Angeles CNN  —  Beautiful beaches. Majestic mountains. Hollywood. One more thing Southern California is known for: earthquakes. Yet for a long time, and to the great relief of millions, the many active faults that claw and tear through the earth have been relatively quiet. That peace has been recently shaken by several quakes that jostled the region to attention, including a 4.4-magnitude under Pasadena in mid-August that sent a jolt across Los Angeles. It was no disaster, but strong enough