deb http://us.archive.ubuntu.com/ubuntu/ natty main restricted deb http://us.archive.ubuntu.com/ubuntu/ natty-updates main restricted deb http://us.archive.ubuntu.com/ubuntu/ natty universe deb http://us.archive.ubuntu.com/ubuntu/ natty-updates universe deb http://us.archive.ubuntu.com/ubuntu/ natty multiverse deb http://us.archive.ubuntu.com/ubuntu/ natty-updates multiverse deb http://security.ubuntu.com/ubuntu natty-security main restricted deb http://security.ubuntu.com/ubuntu natty-security universe deb http://security.ubuntu.com/ubuntu natty-security multiverse