On Wednesday Apple reported their earnings for the December quarter. It was their best quarter yet, and the fourth most profitable quarter of any company in history. Yet their stock plunged by 11%. It's now trading at around 450 after cresting above 700 a few months ago. What gives? In short, market analysts tend to expect Apple to be perfect. And they saw some weaknesses in Apple's report: they had expected Apple to sell at least 50 million iPhones, but Apple reported 47 million sold. Apple also sold a million fewer computers than expected. And there's lingering doubt that Apple still has its mojo.