Research in Motion just kicked out its year-end and Q4 earnings for fiscal 2011, and while things look fairly rosy for now, shares of the company have sunk around ten percent in after-hours trading. Why? Because even the greatest performance in the world can't ward off skeptical investors who are keyed in on guidance. The outfit reported expected revenues of around $5.2 billion and $5.6 billion, with earnings ranging from $1.47 billion to $1.55 per share. Sounds lovely, but not when you consider that analysts had expected those figures to be closer to $1.65 per share. That said, RIM did manage to ship 52.3 million BlackBerry smartphones, representing a 43 percent uptick over fiscal 2010. Furthermore, fiscal 2011 revenue shot up 33 percent over fiscal 2010 (lan