#在编辑器里,删除所有东西,并在加上下面的行:
deb http://archive.ubuntu.org.cn/ubuntu/ breezy main restricted universe multiverse
deb http://archive.ubuntu.org.cn/ubuntu/ breezy-security main restricted universe multiverse
deb http://archive.ubuntu.org.cn/ubuntu/ breezy-updates main restricted universe multiverse
deb http://archive.ubuntu.org.cn/ubuntu/ breezy-backports main restricted universe multiverse
deb http://archive.ubuntu.org.cn/ubuntu-cn/ breezy main restricted universe multiverse
deb http://archive.ubuntu.org.cn/backports/ breezy-extras main restricted universe multiverse
#这里你也可以直接使用更快速的ubuntu.cn99.com的源（推荐）：
deb http://ubuntu.cn99.com/ubuntu/ breezy main restricted universe multiverse
deb http://ubuntu.cn99.com/ubuntu/ breezy-updates main restricted universe multiverse
deb http://ubuntu.cn99.com/ubuntu/ breezy-security main restricted universe multiverse
deb http://ubuntu.cn99.com/ubuntu/ breezy-backports main restricted universe multiverse
deb http://ubuntu.cn99.com/ubuntu-cn/ breezy main restricted universe multiverse
deb http://ubuntu.cn99.com/backports/ breezy-extras main restricted universe multiverse
#这里你还可以使用速度也非常快的的mirror.lupaworld.com的源：
deb http://mirror.lupaworld.com/ubuntu/archive/ breezy main restricted universe multiverse
deb http://mirror.lupaworld.com/ubuntu/archive/ breezy-security main restricted universe multiverse
deb http://mirror.lupaworld.com/ubuntu/archive/ breezy-updates main restricted universe multiverse
deb http://mirror.lupaworld.com/ubuntu/archive/ breezy-backports main restricted universe multiverse
deb http://mirror.lupaworld.com/ubuntu/ubuntu-cn/ breezy main restricted universe multiverse
deb http://mirror.lupaworld.com/ubuntu/backports/ breezy-extras main restricted universe multiverse