If you are having problems with the android-sdk emulator being slow make sure you have followed the instruction to activate the virtual machine acceleration for the emulator:

http://developer.android.com/tools/devices/emulator.html#vm-linux

You basically need to make sure you have KVM properly installed and that you are calling the emulator with the right parameters: 

emulator -avd <avd_name> -qemu -m 512 -enable-kvm