Motorola Mobility posted fall results Thursday underscoring the gap between its ambitions in tablets and its actual performance. The company shipped 200,000 Xoom and Xyboard tablets in the last three months of 2011, which while better than its low point in summer was still lower than what it managed in the first two quarters of 2011. It shipped just one million of its Android tablets all year, which Apple's iPad at its current pace can eclipse in less than a week.
