Install MongoDB on Ubuntu from apt
sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys E73ED15E
sudo vim /etc/apt/sources.list deb http://ppa.launchpad.net/rattlecentral/mongodb/ubuntu karmic main deb-src http://ppa.launchpad.net/rattlecentral/mongodb/ubuntu karmic main
(`ェ´)ピャー http://groups.google.com/group/mongodb-user/browse_thread/thread/e3ffa4f4f913774e
(`ェ´)ピャー エラーでたーやめとけー