运维进行时

备份软件源：
sudo cp /etc/apt/sources.list /etc/apt/sources.list_backup

编辑软件源：
sudo gedit /etc/apt/sources.list

将里面的内容通通删掉，然后将下面的信息粘帖进去：
Archive.ubuntu.com更新服务器（欧洲，此为官方源，电信网通用户使用)：

deb http://archive.ubuntu.com/ubuntu/ jaunty main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu/ jaunty-security main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu/ jaunty-updates main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu/ jaunty-proposed main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu/ jaunty-backports main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu/ jaunty main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu/ jaunty-security main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu/ jaunty-updates main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu/ jaunty-proposed main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu/ jaunty-backports main restricted universe multiverse


网易163更新服务器：

deb http://mirrors.163.com/ubuntu/ jaunty main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ jaunty-security main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ jaunty-updates main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ jaunty-proposed main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ jaunty-backports main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ jaunty main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ jaunty-security main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ jaunty-updates main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ jaunty-proposed main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ jaunty-backports main restricted universe multiverse


Mirrors.shlug.org更新服务器（电信服务器，Ubuntu China Official Mirror, maintained by Shanghai Linux User Group）：

deb http://cn.archive.ubuntu.com/ubuntu jaunty main restricted universe multiverse
deb http://cn.archive.ubuntu.com/ubuntu jaunty-security main restricted universe multiverse
deb http://cn.archive.ubuntu.com/ubuntu jaunty-updates main restricted universe multiverse
deb http://cn.archive.ubuntu.com/ubuntu jaunty-backports main restricted universe multiverse
deb http://cn.archive.ubuntu.com/ubuntu jaunty-proposed main restricted universe multiverse
deb-src http://cn.archive.ubuntu.com/ubuntu jaunty main restricted universe multiverse
deb-src http://cn.archive.ubuntu.com/ubuntu jaunty-security main restricted universe multiverse
deb-src http://cn.archive.ubuntu.com/ubuntu jaunty-updates main restricted universe multiverse
deb-src http://cn.archive.ubuntu.com/ubuntu jaunty-backports main restricted universe multiverse
deb-src http://cn.archive.ubuntu.com/ubuntu jaunty-proposed main restricted universe multiverse


Mirror.lupaworld.com更新服务器（浙江省杭州市双线服务器，推荐）：

deb http://mirror.lupaworld.com/ubuntu jaunty main restricted universe multiverse
deb http://mirror.lupaworld.com/ubuntu jaunty-security main restricted universe multiverse
deb http://mirror.lupaworld.com/ubuntu jaunty-updates main restricted universe multiverse
deb http://mirror.lupaworld.com/ubuntu jaunty-backports main restricted universe multiverse
deb http://mirror.lupaworld.com/ubuntu jaunty-proposed main restricted universe multiverse
deb-src http://mirror.lupaworld.com/ubuntu jaunty main restricted universe multiverse
deb-src http://mirror.lupaworld.com/ubuntu jaunty-security main restricted universe multiverse
deb-src http://mirror.lupaworld.com/ubuntu jaunty-updates main restricted universe multiverse
deb-src http://mirror.lupaworld.com/ubuntu jaunty-backports main restricted universe multiverse
deb-src http://mirror.lupaworld.com/ubuntu jaunty-proposed main restricted universe multiverse

厦门大学更新服务器（教育网服务器）：

deb ftp://ubuntu.realss.cn/ubuntu/ jaunty main restricted universe multiverse
deb ftp://ubuntu.realss.cn/ubuntu/ jaunty-backports restricted universe multiverse
deb ftp://ubuntu.realss.cn/ubuntu/ jaunty-proposed main restricted universe multiverse
deb ftp://ubuntu.realss.cn/ubuntu/ jaunty-security main restricted universe multiverse
deb ftp://ubuntu.realss.cn/ubuntu/ jaunty-updates main restricted universe multiverse
deb-src ftp://ubuntu.realss.cn/ubuntu/ jaunty main restricted universe multiverse
deb-src ftp://ubuntu.realss.cn/ubuntu/ jaunty-backports main restricted universe multiverse
deb-src ftp://ubuntu.realss.cn/ubuntu/ jaunty-proposed main restricted universe multiverse
deb-src ftp://ubuntu.realss.cn/ubuntu/ jaunty-security main restricted universe multiverse
deb-src ftp://ubuntu.realss.cn/ubuntu/ jaunty-updates main restricted universe multiverse


成都市 电子科技大学更新服务器（教育网，推荐校园网和网通用户使用）：

deb http://ubuntu.uestc.edu.cn/ubuntu/ jaunty main multiverse restricted universe
deb http://ubuntu.uestc.edu.cn/ubuntu/ jaunty-backports main multiverse restricted universe
deb http://ubuntu.uestc.edu.cn/ubuntu/ jaunty-proposed main multiverse restricted universe
deb http://ubuntu.uestc.edu.cn/ubuntu/ jaunty-security main multiverse restricted universe
deb http://ubuntu.uestc.edu.cn/ubuntu/ jaunty-updates main multiverse restricted universe
deb-src http://ubuntu.uestc.edu.cn/ubuntu/ jaunty main multiverse restricted universe
deb-src http://ubuntu.uestc.edu.cn/ubuntu/ jaunty-backports main multiverse restricted universe
deb-src http://ubuntu.uestc.edu.cn/ubuntu/ jaunty-proposed main multiverse restricted universe
deb-src http://ubuntu.uestc.edu.cn/ubuntu/ jaunty-security main multiverse restricted universe
deb-src http://ubuntu.uestc.edu.cn/ubuntu/ jaunty-updates main multiverse restricted universe

== 如果无法解析uestc.edu.cn域名，请使用以下地址 ==

deb http://ubuntu.dormforce.net/ubuntu/ jaunty main multiverse restricted universe
deb http://ubuntu.dormforce.net/ubuntu/ jaunty-backports main multiverse restricted universe
deb http://ubuntu.dormforce.net/ubuntu/ jaunty-proposed main multiverse restricted universe
deb http://ubuntu.dormforce.net/ubuntu/ jaunty-security main multiverse restricted universe
deb http://ubuntu.dormforce.net/ubuntu/ jaunty-updates main multiverse restricted universe
deb-src http://ubuntu.dormforce.net/ubuntu/ jaunty main multiverse restricted universe
deb-src http://ubuntu.dormforce.net/ubuntu/ jaunty-backports main multiverse restricted universe
deb-src http://ubuntu.dormforce.net/ubuntu/ jaunty-proposed main multiverse restricted universe
deb-src http://ubuntu.dormforce.net/ubuntu/ jaunty-security main multiverse restricted universe
deb-src http://ubuntu.dormforce.net/ubuntu/ jaunty-updates main multiverse restricted universe


上海市上海交通大学更新服务器（教育网，推荐校园网和网通用户使用）：

deb http://ftp.sjtu.edu.cn/ubuntu/ jaunty main multiverse restricted universe
deb http://ftp.sjtu.edu.cn/ubuntu/ jaunty-backports main multiverse restricted universe
deb http://ftp.sjtu.edu.cn/ubuntu/ jaunty-proposed main multiverse restricted universe
deb http://ftp.sjtu.edu.cn/ubuntu/ jaunty-security main multiverse restricted universe
deb http://ftp.sjtu.edu.cn/ubuntu/ jaunty-updates main multiverse restricted universe
deb-src http://ftp.sjtu.edu.cn/ubuntu/ jaunty main multiverse restricted universe
deb-src http://ftp.sjtu.edu.cn/ubuntu/ jaunty-backports main multiverse restricted universe
deb-src http://ftp.sjtu.edu.cn/ubuntu/ jaunty-proposed main multiverse restricted universe
deb-src http://ftp.sjtu.edu.cn/ubuntu/ jaunty-security main multiverse restricted universe
deb-src http://ftp.sjtu.edu.cn/ubuntu/ jaunty-updates main multiverse restricted universe

中国科学技术大学更新服务器（教育网，推荐校园网和网通用户使用）：

deb http://debian.ustc.edu.cn/ubuntu/ jaunty main multiverse restricted universe
deb http://debian.ustc.edu.cn/ubuntu/ jaunty-backports main multiverse restricted universe
deb http://debian.ustc.edu.cn/ubuntu/ jaunty-proposed main multiverse restricted universe
deb http://debian.ustc.edu.cn/ubuntu/ jaunty-security main multiverse restricted universe
deb http://debian.ustc.edu.cn/ubuntu/ jaunty-updates main multiverse restricted universe
deb-src http://debian.ustc.edu.cn/ubuntu/ jaunty main multiverse restricted universe
deb-src http://debian.ustc.edu.cn/ubuntu/ jaunty-backports main multiverse restricted universe
deb-src http://debian.ustc.edu.cn/ubuntu/ jaunty-proposed main multiverse restricted universe
deb-src http://debian.ustc.edu.cn/ubuntu/ jaunty-security main multiverse restricted universe
deb-src http://debian.ustc.edu.cn/ubuntu/ jaunty-updates main multiverse restricted universe


中国台湾 台湾大学更新服务器（推荐网通用户使用，电信PING平均响应速度41MS。强烈推荐此源，比较完整，较少出现同步问题）：

deb http://ubuntu.csie.ntu.edu.tw/ubuntu/ jaunty main restricted universe multiverse
deb-src http://ubuntu.csie.ntu.edu.tw/ubuntu/ jaunty main restricted universe multiverse
deb http://ubuntu.csie.ntu.edu.tw/ubuntu/ jaunty-updates main restricted universe multiverse
deb-src http://ubuntu.csie.ntu.edu.tw/ubuntu/ jaunty-updates main restricted universe multiverse
deb http://ubuntu.csie.ntu.edu.tw/ubuntu/ jaunty-backports main restricted universe multiverse
deb-src http://ubuntu.csie.ntu.edu.tw/ubuntu/ jaunty-backports main restricted universe multiverse
deb http://ubuntu.csie.ntu.edu.tw/ubuntu/ jaunty-security main restricted universe multiverse
deb-src http://ubuntu.csie.ntu.edu.tw/ubuntu/ jaunty-security main restricted universe multiverse
deb http://ubuntu.csie.ntu.edu.tw/ubuntu/ jaunty-proposed main multiverse restricted universe
deb-src http://ubuntu.csie.ntu.edu.tw/ubuntu/ jaunty-proposed main restricted universe multiverse


mirror.rootguide.org更新服务器（上海市 电信）：

deb http://mirror.rootguide.org/ubuntu/ jaunty main restricted universe multiverse
deb-src http://mirror.rootguide.org/ubuntu/ jaunty main restricted universe multiverse
deb http://mirror.rootguide.org/ubuntu/ jaunty-updates main restricted universe multiverse
deb-src http://mirror.rootguide.org/ubuntu/ jaunty-updates main restricted universe multiverse
deb http://mirror.rootguide.org/ubuntu/ jaunty-backports main restricted universe multiverse
deb-src http://mirror.rootguide.org/ubuntu/ jaunty-backports main restricted universe multiverse
deb http://mirror.rootguide.org/ubuntu/ jaunty-security main restricted universe multiverse
deb-src http://mirror.rootguide.org/ubuntu/ jaunty-security main restricted universe multiverse
deb http://mirror.rootguide.org/ubuntu/ jaunty-proposed main multiverse restricted universe
deb-src http://mirror.rootguide.org/ubuntu/ jaunty-proposed main restricted universe multiverse


台湾的官方源速度也相当不错，有时甚至快于内地的：

deb http://tw.archive.ubuntu.com/ubuntu jaunty main restricted universe multiverse
deb http://tw.archive.ubuntu.com/ubuntu jaunty-security main restricted universe multiverse
deb http://tw.archive.ubuntu.com/ubuntu jaunty-updates main restricted universe multiverse
deb http://tw.archive.ubuntu.com/ubuntu jaunty-backports main restricted universe multiverse
deb http://tw.archive.ubuntu.com/ubuntu jaunty-proposed main restricted universe multiverse
deb-src http://tw.archive.ubuntu.com/ubuntu jaunty main restricted universe multiverse
deb-src http://tw.archive.ubuntu.com/ubuntu jaunty-security main restricted universe multiverse
deb-src http://tw.archive.ubuntu.com/ubuntu jaunty-updates main restricted universe multiverse
deb-src http://tw.archive.ubuntu.com/ubuntu jaunty-backports main restricted universe multiverse
deb-src http://tw.archive.ubuntu.com/ubuntu jaunty-proposed main restricted universe multiverse

保存后，更新软件源，大功告成：
sudo apt-get update