http://stackoverflow.com/questions/8937818/failed-to-parse-adb-version-wrong-elf-class
Google requires some libraries to be 32-bit. That's why you should install them. – Yury Jan 20
apt-get install ia32-libs ( not the right path!)
install Java 7 on Ubuntu Natty
http://brunoreis.com/tech/installing-java-ubuntu-natty/