Stock in Apple Computer continues to erode and Wednesday it fell to a 12 year low, closing at $13.06. Investors fear that Apple has been hit by too much bad news lately, with Power Computing jumping ship to the PC platform to escape the reins of Apple and an unknown investor--thought to be Steve Jobs--dropping 1.5 million shares of stock. The Power Computing story gets more interesting, too: according to the company's filing with the Security Exchange Commission (SEC), Power Computing has sub-licensed the Mac OS from IBM, not Apple, because it got a better price. Apple's share of the personal computer market has fallen below 5% as sales continue to drop