Ubuntu9.10源

我使用的，带宽2M，速度达到1300KB左右。
deb http://ubuntu.srt.cn/ubuntu/ karmic main restricted universe multiverse
deb http://ubuntu.srt.cn/ubuntu/ karmic-security main restricted universe multiverse
deb http://ubuntu.srt.cn/ubuntu/ karmic-updates main restricted universe multiverse
deb http://ubuntu.srt.cn/ubuntu/ karmic-proposed main restricted universe multiverse
deb http://ubuntu.srt.cn/ubuntu/ karmic-backports main restricted universe multiverse
deb-src http://ubuntu.srt.cn/ubuntu/ karmic main restricted universe multiverse
deb-src http://ubuntu.srt.cn/ubuntu/ karmic-security main restricted universe multiverse
deb-src http://ubuntu.srt.cn/ubuntu/ karmic-updates main restricted universe multiverse
deb-src http://ubuntu.srt.cn/ubuntu/ karmic-proposed main restricted universe multiverse
deb-src http://ubuntu.srt.cn/ubuntu/ karmic-backports main restricted universe multiverse
deb http://security.ubuntu.com/ubuntu karmic-security main restricted
deb-src http://security.ubuntu.com/ubuntu karmic-security main restricted
deb http://security.ubuntu.com/ubuntu karmic-security universe
deb-src http://security.ubuntu.com/ubuntu karmic-security universe
deb http://security.ubuntu.com/ubuntu karmic-security multiverse
deb-src http://security.ubuntu.com/ubuntu karmic-security multiverse
添加方法：
先备份下原先的文件
sudo cp /etc/apt/sources.list /etc/apt/sources.list.backup
修改更新源文件
sudo gedit /etc/apt/sources.list
把里面内容删除添加上面的源，保存退出即可！


下面是一些别的
上海交大
deb http://mirror.bjtu.edu.cn/ubuntu karmic main restricted universe multiverse
deb http://mirror.bjtu.edu.cn/ubuntu karmic-security main restricted universe multiverse
deb http://mirror.bjtu.edu.cn/ubuntu karmic-updates main restricted universe multiverse
deb http://mirror.bjtu.edu.cn/ubuntu karmic-backports main restricted universe multiverse
deb http://mirror.bjtu.edu.cn/ubuntu karmic-proposed main restricted universe multiverse
deb-src http://mirror.bjtu.edu.cn/ubuntu karmic main restricted universe multiverse
deb-src http://mirror.bjtu.edu.cn/ubuntu karmic-security main restricted universe multiverse
deb-src http://mirror.bjtu.edu.cn/ubuntu karmic-updates main restricted universe multiverse
deb-src http://mirror.bjtu.edu.cn/ubuntu karmic-backports main restricted universe multiverse
deb-src http://mirror.bjtu.edu.cn/ubuntu karmic-proposed main restricted universe multiverse
江苏双线
##deb http://mirror.lupaworld.com/ubuntu karmic main restricted universe multiverse
##deb http://mirror.lupaworld.com/ubuntu karmic-security main restricted universe multiverse
##deb http://mirror.lupaworld.com/ubuntu karmic-updates main restricted universe multiverse
##deb http://mirror.lupaworld.com/ubuntu karmic-backports main restricted universe multiverse
##deb http://mirror.lupaworld.com/ubuntu karmic-proposed main restricted universe multiverse
##deb-src http://mirror.lupaworld.com/ubuntu karmic main restricted universe multiverse
##deb-src http://mirror.lupaworld.com/ubuntu karmic-security main restricted universe multiverse
##deb-src http://mirror.lupaworld.com/ubuntu karmic-updates main restricted universe multiverse
##deb-src http://mirror.lupaworld.com/ubuntu karmic-backports main restricted universe multiverse
##deb-src http://mirror.lupaworld.com/ubuntu karmic-proposed main restricted universe multiverse

修改前先备份
sudo cp /etc/apt/sources.list /etc/apt/sources.bak
修改源配置文件
sudo gedit /etc/apt/sources.list
改完了要
sudo aptitude update #更新列表
sudo aptitude upgrade #更新系统