This week's book giveaway is in the OO, Patterns, UML and Refactoring forum. We're giving away four copies of Refactoring for Software Design Smells: Managing Technical Debt and have Girish Suryanarayana, Ganesh Samarthyam & Tushar Sharma on-line! See this thread for details.
There seems to be a configuration issue with your Android SDK installation. You might try creating a new AVD, or at least double-check the settings on the AVD you are using. If that fails, I would reinstall both Eclipse and the Android SDK.