-------- 本次更新于2009-11-16 -------
Ubuntu 中默认的官方源实在是太慢了，我这里只有2～3KB/s ！！！ 于是找了几个不错的更新源分享一下，方便大家找到适合自己的最快更新源。
Ubuntu更新向来很迅速，未能将每个版本的sources.list文件一一列出。请参考下表确认Ubuntu的版本（取开发代号第一个单词,如8.10的intrepid），选择好速度不错的源，然后进行简单文本替换生成所需内容：
| Release | Edition | Codename | Remarks |
|---|---|---|---|
| 2004-10-20 | Ubuntu 4.10 | Warty Warthog | 长疣的疣猪 |
| 2005-04-08 | Ubuntu 5.04 | Hoary Hedgehog | 灰白的刺猬 |
| 2005-10-13 | Ubuntu 5.10 | Breezy Badger | 活泼的獾 |
| 2006-06-01 | Ubuntu 6.06 LTS | Dapper Drake | 整洁的公鸭 |
| 2006-10-06 | Ubuntu 6.10 | Edgy Eft | 急躁的水蜥 |
| 2007-04-19 | Ubuntu 7.04 | Feisty Fawn | 坏脾气的小鹿 |
| 2007-10-18 | Ubuntu 7.10 | Gutsy Gibbon | 勇敢的长臂猿 |
| 2008-04-24 | Ubuntu 8.04 LTS | Hardy Heron | 耐寒的苍鹭 |
| 2008-10-30 | Ubuntu 8.10 | Intrepid Ibex | 勇敢的山羊 |
| 2009-04-24 | Ubuntu 9.04 | Jaunty Jackalope | 得意的怀俄明野兔 |
| 2009-10-29 | Ubuntu 9.10 | Karmic Koala | 幸运的考拉 |
| Im coming ~~ | Ubuntu 10.04 LTS | Lucid Lynx | 清醒的猞猁 |
| 未完待续... ... | |||
替换前做个副本先：
sudo cp /etc/apt/sources.list /etc/apt/sources.list.bak
编辑源列表，加入国内源地址：
vi /etc/apt/sources.list
# Lupa完整源，据说2-3天与官方同步一次，浙江杭州双线服务器（
非江苏）deb http://mirror.lupaworld.com/ubuntu intrepid main restricted universe multiverse
deb http://mirror.lupaworld.com/ubuntu intrepid-security main restricted universe multiverse
deb http://mirror.lupaworld.com/ubuntu intrepid-updates main restricted universe multiverse
deb http://mirror.lupaworld.com/ubuntu intrepid-backports main restricted universe multiverse
deb http://mirror.lupaworld.com/ubuntu/ubuntu-cn intrepid main restricted universe multiverse
deb-src http://mirror.lupaworld.com/ubuntu intrepid main restricted universe multiverse
deb-src http://mirror.lupaworld.com/ubuntu intrepid-security main restricted universe multiverse
deb-src http://mirror.lupaworld.com/ubuntu intrepid-updates main restricted universe multiverse
deb-src http://mirror.lupaworld.com/ubuntu intrepid-backports main restricted universe multiverse
或者
# 网易新开的更新源，欢迎国内其它门户继承与发扬
deb http://mirrors.163.com/ubuntu/ intrepid main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ intrepid-security main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ intrepid-updates main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ intrepid-proposed main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ intrepid-backports main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ intrepid main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ intrepid-security main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ intrepid-updates main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ intrepid-proposed main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ intrepid-backports main restricted universe multiverse
或者
# cn99 又回来了！该源服务器线路为江苏常州电信
deb http://ubuntu.cn99.com/ubuntu/ intrepid main restricted universe multiverse
deb http://ubuntu.cn99.com/ubuntu/ intrepid-security main restricted universe multiverse
deb http://ubuntu.cn99.com/ubuntu/ intrepid-updates main restricted universe multiverse
deb http://ubuntu.cn99.com/ubuntu/ intrepid-proposed main restricted universe multiverse
deb http://ubuntu.cn99.com/ubuntu/ intrepid-backports main restricted universe multiverse
deb-src http://ubuntu.cn99.com/ubuntu/ intrepid main restricted universe multiverse
deb-src http://ubuntu.cn99.com/ubuntu/ intrepid-security main restricted universe multiverse
deb-src http://ubuntu.cn99.com/ubuntu/ intrepid-updates main restricted universe multiverse
deb-src http://ubuntu.cn99.com/ubuntu/ intrepid-proposed main restricted universe multiverse
deb-src http://ubuntu.cn99.com/ubuntu/ intrepid-backports main restricted universe multiverse
deb http://ubuntu.cn99.com/ubuntu-cn/ intrepid main restricted universe multiverse
或者
# Mirrors.shlug.org 更新服务器，上海电信,Ubuntu China Official Mirror
deb http://cn.archive.ubuntu.com/ubuntu intrepid main restricted universe multiverse
deb http://cn.archive.ubuntu.com/ubuntu intrepid-security main restricted universe multiverse
deb http://cn.archive.ubuntu.com/ubuntu intrepid-updates main restricted universe multiverse
deb http://cn.archive.ubuntu.com/ubuntu intrepid-backports main restricted universe multiverse
deb http://cn.archive.ubuntu.com/ubuntu intrepid-proposed main restricted universe multiverse
deb-src http://cn.archive.ubuntu.com/ubuntu intrepid main restricted universe multiverse
deb-src http://cn.archive.ubuntu.com/ubuntu intrepid-security main restricted universe multiverse
deb-src http://cn.archive.ubuntu.com/ubuntu intrepid-updates main restricted universe multiverse
deb-src http://cn.archive.ubuntu.com/ubuntu intrepid-backports main restricted universe multiverse
deb-src http://cn.archive.ubuntu.com/ubuntu intrepid-proposed main restricted universe multiverse
或者
# 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 intrepid main restricted universe multiverse
deb http://tw.archive.ubuntu.com/ubuntu intrepid-security main restricted universe multiverse
deb http://tw.archive.ubuntu.com/ubuntu intrepid-updates main restricted universe multiverse
deb http://tw.archive.ubuntu.com/ubuntu intrepid-backports main restricted universe multiverse
deb http://tw.archive.ubuntu.com/ubuntu intrepid-proposed main restricted universe multiverse
deb-src http://tw.archive.ubuntu.com/ubuntu intrepid main restricted universe multiverse
deb-src http://tw.archive.ubuntu.com/ubuntu intrepid-security main restricted universe multiverse
deb-src http://tw.archive.ubuntu.com/ubuntu intrepid-updates main restricted universe multiverse
deb-src http://tw.archive.ubuntu.com/ubuntu intrepid-backports main restricted universe multiverse
deb-src http://tw.archive.ubuntu.com/ubuntu intrepid-proposed main restricted universe multiverse
保存好后测试一下新源的速度如何：
sudo apt-get update
因为处在不同地区，换用之前先ping一下服务器看看响应时间（有些源没开ping，可以通过浏览器查看感受下速度）。我用的lupa 的源，update 了一下，更新速度基本能在200K左右，已经比较满意了。
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另，附上几个教育网的源地址，建议打开看看，顺便就可以了解你的访问速度：
http://ubuntu.dormforce.net/ or http://ubuntu.uestc.edu.cn/ （电子科技大学）
http://ftp.sjtu.edu.cn/ （上海交大）
http://mirror.bjtu.edu.cn/ （北京交大）
http://debian.ustc.edu.cn/ubuntu/ （中国科技大学）
ftp://ubuntu.realss.cn/ubuntu/ （吓大的更新服务器）
继续更新：
| region | ubuntu source url |
| 北京世纪互联 | http://linux.ilvgo.cn/ |
| 马来西亚 Malaysia | http://archive.mmu.edu.my/ |
| 日本 Japan | http://jp.archive.ubuntu.com/ |
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