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deb http://archive.ubuntu.com/ubuntu/ feisty main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu/ feisty-security main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu/ feisty-updates main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu/ feisty-proposed main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu/ feisty-backports main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu/ feisty main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu/ feisty-security main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu/ feisty-updates main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu/ feisty-proposed main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu/ feisty-backports main restricted universe multiverse
o Ubuntu.cn99.com 更新服务器(江苏省常州市电信，推荐电信用户使用。）
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deb http://ubuntu.cn99.com/ubuntu/ feisty main restricted universe multiverse
deb http://ubuntu.cn99.com/ubuntu/ feisty-security main restricted universe multiverse
deb http://ubuntu.cn99.com/ubuntu/ feisty-updates main restricted universe multiverse
deb http://ubuntu.cn99.com/ubuntu/ feisty-proposed main restricted universe multiverse
deb http://ubuntu.cn99.com/ubuntu/ feisty-backports main restricted universe multiverse
deb-src http://ubuntu.cn99.com/ubuntu/ feisty main restricted universe multiverse
deb-src http://ubuntu.cn99.com/ubuntu/ feisty-security main restricted universe multiverse
deb-src http://ubuntu.cn99.com/ubuntu/ feisty-updates main restricted universe multiverse
deb-src http://ubuntu.cn99.com/ubuntu/ feisty-proposed main restricted universe multiverse
deb-src http://ubuntu.cn99.com/ubuntu/ feisty-backports main restricted universe multiverse
deb http://ubuntu.cn99.com/ubuntu-cn/ feisty main restricted universe multiverse
o Mirror.lupaworld.com 更新服务器(浙江省杭州市电信，亚洲地区官方更新服务器，推荐全国用户使用。）：
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deb http://cn.archive.ubuntu.com/ubuntu feisty main restricted universe multiverse
deb http://cn.archive.ubuntu.com/ubuntu feisty-security main restricted universe multiverse
deb http://cn.archive.ubuntu.com/ubuntu feisty-updates main restricted universe multiverse
deb http://cn.archive.ubuntu.com/ubuntu feisty-backports main restricted universe multiverse
deb http://cn.archive.ubuntu.com/ubuntu feisty-proposed main restricted universe multiverse
deb-src http://cn.archive.ubuntu.com/ubuntu feisty main restricted universe multiverse
deb-src http://cn.archive.ubuntu.com/ubuntu feisty-security main restricted universe multiverse
deb-src http://cn.archive.ubuntu.com/ubuntu feisty-updates main restricted universe multiverse
deb-src http://cn.archive.ubuntu.com/ubuntu feisty-backports main restricted universe multiverse
deb-src http://cn.archive.ubuntu.com/ubuntu feisty-proposed main restricted universe multiverse
o 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。）(目前已无法使用)：
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deb http://ftp.sjtu.edu.cn/ubuntu/ feisty main multiverse restricted universe
deb http://ftp.sjtu.edu.cn/ubuntu/ feisty-backports main multiverse restricted universe
deb http://ftp.sjtu.edu.cn/ubuntu/ feisty-proposed main multiverse restricted universe
deb http://ftp.sjtu.edu.cn/ubuntu/ feisty-security main multiverse restricted universe
deb http://ftp.sjtu.edu.cn/ubuntu/ feisty-updates main multiverse restricted universe
deb-src http://ftp.sjtu.edu.cn/ubuntu/ feisty main multiverse restricted universe
deb-src http://ftp.sjtu.edu.cn/ubuntu/ feisty-backports main multiverse restricted universe
deb-src http://ftp.sjtu.edu.cn/ubuntu/ feisty-proposed main multiverse restricted universe
deb-src http://ftp.sjtu.edu.cn/ubuntu/ feisty-security main multiverse restricted universe
deb-src http://ftp.sjtu.edu.cn/ubuntu/ feisty-updates main multiverse restricted universe
o 北京市清华大学 更新服务器（教育网，推荐校园网和网通用户使用。)：
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deb http://mirror9.net9.org/ubuntu/ feisty main multiverse restricted universe
deb http://mirror9.net9.org/ubuntu/ feisty-backports main multiverse restricted universe
deb http://mirror9.net9.org/ubuntu/ feisty-proposed main multiverse restricted universe
deb http://mirror9.net9.org/ubuntu/ feisty-security main multiverse restricted universe
deb http://mirror9.net9.org/ubuntu/ feisty-updates main multiverse restricted universe
deb-src http://mirror9.net9.org/ubuntu/ feisty main multiverse restricted universe
deb-src http://mirror9.net9.org/ubuntu/ feisty-backports main multiverse restricted universe
deb-src http://mirror9.net9.org/ubuntu/ feisty-proposed main multiverse restricted universe
deb-src http://mirror9.net9.org/ubuntu/ feisty-security main multiverse restricted universe
deb-src http://mirror9.net9.org/ubuntu/ feisty-updates main multiverse restricted universe
o 中国 台湾省台湾大学 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)
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deb http://ubuntu.csie.ntu.edu.tw/ubuntu/ feisty main restricted universe multiverse
deb-src http://ubuntu.csie.ntu.edu.tw/ubuntu/ feisty main restricted universe multiverse
deb http://ubuntu.csie.ntu.edu.tw/ubuntu/ feisty-updates main restricted universe multiverse
deb-src http://ubuntu.csie.ntu.edu.tw/ubuntu/ feisty-updates main restricted universe multiverse
deb http://ubuntu.csie.ntu.edu.tw/ubuntu/ feisty-backports main restricted universe multiverse
deb-src http://ubuntu.csie.ntu.edu.tw/ubuntu/ feisty-backports main restricted universe multiverse
deb http://ubuntu.csie.ntu.edu.tw/ubuntu/ feisty-security main restricted universe multiverse
deb-src http://ubuntu.csie.ntu.edu.tw/ubuntu/ feisty-security main restricted universe multiverse
deb http://ubuntu.csie.ntu.edu.tw/ubuntu/ feisty-proposed main multiverse restricted universe
deb-src http://ubuntu.csie.ntu.edu.tw/ubuntu/ feisty-proposed main restricted universe multiverse
deb http://ubuntu.csie.ntu.edu.tw/ubuntu-cn/ feisty main restricted universe multiverse
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o Mirror.vmmatrix.net 更新服务器（上海市电信，推荐电信网通用户使用。）(目前已无法使用):
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deb http://mirror.vmmatrix.net/ubuntu/ feisty main restricted universe multiverse
deb-src http://mirror.vmmatrix.net/ubuntu/ feisty main restricted universe multiverse
deb http://mirror.vmmatrix.net/ubuntu/ feisty-updates main restricted universe multiverse
deb-src http://mirror.vmmatrix.net/ubuntu/ feisty-updates main restricted universe multiverse
deb http://mirror.vmmatrix.net/ubuntu/ feisty-backports main restricted universe multiverse
deb-src http://mirror.vmmatrix.net/ubuntu/ feisty-backports main restricted universe multiverse
deb http://mirror.vmmatrix.net/ubuntu/ feisty-security main restricted universe multiverse
deb-src http://mirror.vmmatrix.net/ubuntu/ feisty-security main restricted universe multiverse
deb http://mirror.vmmatrix.net/ubuntu/ feisty-proposed main multiverse restricted universe
deb-src http://mirror.vmmatrix.net/ubuntu/ feisty-proposed main restricted universe multiverse
o ubuntu.cnsite.org 更新服务器 (福建省福州市 电信):
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deb http://ubuntu.cnsite.org/ubuntu/ feisty main restricted universe multiverse
deb-src http://ubuntu.cnsite.org/ubuntu/ feisty main restricted universe multiverse
deb http://ubuntu.cnsite.org/ubuntu/ feisty-updates main restricted universe multiverse
deb-src http://ubuntu.cnsite.org/ubuntu/ feisty-updates main restricted universe multiverse
deb http://ubuntu.cnsite.org/ubuntu/ feisty-backports main restricted universe multiverse
deb-src http://ubuntu.cnsite.org/ubuntu/ feisty-backports main restricted universe multiverse
deb http://ubuntu.cnsite.org/ubuntu/ feisty-security main restricted universe multiverse
deb-src http://ubuntu.cnsite.org/ubuntu/ feisty-security main restricted universe multiverse
deb http://ubuntu.cnsite.org/ubuntu/ feisty-proposed main multiverse restricted universe
deb-src http://ubuntu.cnsite.org/ubuntu/ feisty-proposed main restricted universe multiverse
o
mirror.rootguide.org 更新服务器 (上海市 电信)
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deb http://mirror.rootguide.org/ubuntu/ feisty main restricted universe multiverse
deb-src http://mirror.rootguide.org/ubuntu/ feisty main restricted universe multiverse
deb http://mirror.rootguide.org/ubuntu/ feisty-updates main restricted universe multiverse
deb-src http://mirror.rootguide.org/ubuntu/ feisty-updates main restricted universe multiverse
deb http://mirror.rootguide.org/ubuntu/ feisty-backports main restricted universe multiverse
deb-src http://mirror.rootguide.org/ubuntu/ feisty-backports main restricted universe multiverse
deb http://mirror.rootguide.org/ubuntu/ feisty-security main restricted universe multiverse
deb-src http://mirror.rootguide.org/ubuntu/ feisty-security main restricted universe multiverse
deb http://mirror.rootguide.org/ubuntu/ feisty-proposed main multiverse restricted universe
deb-src http://mirror.rootguide.org/ubuntu/ feisty-proposed main restricted universe multiverse
deb http://mirror.rootguide.org/ubuntu-cn/ feisty main restricted universe multiverse
o 很多人反映台湾的官方源速度也是相当不错，有时甚至快于内地的：
deb http://tw.archive.ubuntu.com/ubuntu feisty main restricted universe multiverse
deb http://tw.archive.ubuntu.com/ubuntu feisty-security main restricted universe multiverse
deb http://tw.archive.ubuntu.com/ubuntu feisty-updates main restricted universe multiverse
deb http://tw.archive.ubuntu.com/ubuntu feisty-backports main restricted universe multiverse
deb http://tw.archive.ubuntu.com/ubuntu feisty-proposed main restricted universe multiverse
deb-src http://tw.archive.ubuntu.com/ubuntu feisty main restricted universe multiverse
deb-src http://tw.archive.ubuntu.com/ubuntu feisty-security main restricted universe multiverse
deb-src http://tw.archive.ubuntu.com/ubuntu feisty-updates main restricted universe multiverse
deb-src http://tw.archive.ubuntu.com/ubuntu feisty-backports main restricted universe multiverse
deb-src http://tw.archive.ubuntu.com/ubuntu feisty-proposed main restricted universe multiverse
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到以下网址可以自定义产生若干源：http://www.ubuntulinux.nl/source-o-matic
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以下网址有极其全面的源，以供补充：http://italy.copybase.ch/blog/lista-repository-sourceslist-ottimizzata-per-ubuntu-kubuntu-linux/
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官方采集的源列表： https://launchpad.net/ubuntu/+archivemirrors