编辑Ubuntu10.04源的方法：
备份源文件
#sudo cp /etc/apt/sources.list /etc/apt/sources.list.bak
编辑源文件
#sudo gedit /etc/apt/sources.list
将文件里的内容全部删除，然后将下列的内容粘贴进gedit后保存即可，以下源中有部分不可用。
Ubuntu 10.04 台湾更新源：
deb http://tw.archive.ubuntu.com/ubuntu/ lucid main universe restricted multiverse
deb http://tw.archive.ubuntu.com/ubuntu/ lucid-updates universe main multiverse restricted
deb http://tw.archive.ubuntu.com/ubuntu/ lucid-proposed universe main multiverse restricted
deb http://tw.archive.ubuntu.com/ubuntu/ lucid-security universe main multiverse restricted
deb http://tw.archive.ubuntu.com/ubuntu/ lucid-backports main multiverse restricted universe
deb-src http://tw.archive.ubuntu.com/ubuntu/ lucid main universe restricted multiverse
deb-src http://tw.archive.ubuntu.com/ubuntu/ lucid-security universe main multiverse restricted
deb-src http://tw.archive.ubuntu.com/ubuntu/ lucid-updates universe main multiverse restricted
deb-src http://tw.archive.ubuntu.com/ubuntu/ lucid-proposed universe main multiverse restricted
deb-src http://tw.archive.ubuntu.com/ubuntu/ lucid-backports universe main multiverse restricted
Ubuntu 10.04更新源 -Lucid Lynx-中国源
提供 ArchLinux，Everest，FreeBSD，Fedora，LFS，Magiclinux，Mandriva，OpenOffice，openSUSE，Puppy，Red Hat，Slitaz，Turbolinux，Ubuntu，中标普华
deb http://mirror.lupaworld.com/Ubuntu/ lucid main universe restricted multiverse
deb-src http://mirror.lupaworld.com/Ubuntu/ lucid main universe restricted multiverse
deb http://mirror.lupaworld.com/Ubuntu/ lucid-security universe main multiverse restricted
deb-src http://mirror.lupaworld.com/Ubuntu/ lucid-security universe main multiverse restricted
deb http://mirror.lupaworld.com/Ubuntu/ lucid-updates universe main multiverse restricted
deb http://mirror.lupaworld.com/Ubuntu/ lucid-proposed universe main multiverse restricted
deb-src http://mirror.lupaworld.com/Ubuntu/ lucid-proposed universe main multiverse restricted
deb http://mirror.lupaworld.com/Ubuntu/ lucid-backports universe main multiverse restricted
deb-src http://mirror.lupaworld.com/Ubuntu/ lucid-backports universe main multiverse restricted
deb-src http://mirror.lupaworld.com/Ubuntu/ lucid-updates universe main multiverse restricted
rootguide 源，Ubuntu官方上海源，提供 Kernel，Hiweed，ubuntu
deb http://mirror.rootguide.org/Ubuntu/ lucid main universe restricted multiverse
deb-src http://mirror.rootguide.org/Ubuntu/ lucid main universe restricted multiverse
deb http://mirror.rootguide.org/Ubuntu/ lucid-security universe main multiverse restricted
deb-src http://mirror.rootguide.org/Ubuntu/ lucid-security universe main multiverse restricted
deb http://mirror.rootguide.org/Ubuntu/ lucid-updates universe main multiverse restricted
deb http://mirror.rootguide.org/Ubuntu/ lucid-proposed universe main multiverse restricted
deb-src http://mirror.rootguide.org/Ubuntu/ lucid-proposed universe main multiverse restricted
deb http://mirror.rootguide.org/Ubuntu/ lucid-backports universe main multiverse restricted
deb-src http://mirror.rootguide.org/Ubuntu/ lucid-backports universe main multiverse restricted
deb-src http://mirror.rootguide.org/Ubuntu/ lucid-updates universe main multiverse restricted
网易开源镜像站,提供
FreeBSD，OpenBSD，archlinux，centos，cygwin，debian，Fedora，gentoo，kernel，openSUSE，slackware，Ubuntu
deb http://mirrors.163.com/Ubuntu/ lucid main universe restricted multiverse
deb-src http://mirrors.163.com/Ubuntu/ lucid main universe restricted multiverse
deb http://mirrors.163.com/Ubuntu/ lucid-security universe main multiverse restricted
deb-src http://mirrors.163.com/Ubuntu/ lucid-security universe main multiverse restricted
deb http://mirrors.163.com/Ubuntu/ lucid-updates universe main multiverse restricted
deb http://mirrors.163.com/Ubuntu/ lucid-proposed universe main multiverse restricted
deb-src http://mirrors.163.com/Ubuntu/ lucid-proposed universe main multiverse restricted
deb http://mirrors.163.com/Ubuntu/ lucid-backports universe main multiverse restricted
deb-src http://mirrors.163.com/Ubuntu/ lucid-backports universe main multiverse restricted
deb-src http://mirrors.163.com/Ubuntu/ lucid-updates universe main multiverse restricted
搜狐开源镜像站，提供
CPAN，FreeBSD，NetBSD，OpenBSD，apache，archlinux，centos，cygwin，dag，debian，Fedora，gentoo，kernel，lfs，mysql，nginx，openSUSE，php，rpmfusion，slackware，Ubuntu
deb http://mirrors.shlug.org/Ubuntu/ lucid main universe restricted multiverse
deb-src http://mirrors.shlug.org/Ubuntu/ lucid main universe restricted multiverse
deb http://mirrors.shlug.org/Ubuntu/ lucid-security universe main multiverse