Microsoft (MSFT) has announced its fourth-quarter (Q2 calendar) and full-year earnings, and the news isn't fantastic. While its enterprise offerings continue to do well (the Server and Tools division grew 9% this year), the company continues to be hampered by the shrinking PC market -- the Windows division, despite the release of Windows 8, saw its profits drop 18% year-over-year. Microsoft's financial report also shows that it took a $900 million charge for "Surface RT inventory adjustments." Dividing that by the recent $150 price cut suggests that Microsoft could be sitting on as many as six million unsold Surface RTs.