更新Ubuntu 8.10源的办法：
首先看清源的版本，intrepid代表8.10，hardy代表8.04。教育网用户就近选择大学源，我一直用中科大的，前两年可以达到几M的速度，近来不知是我们网速的原因，还是他们负担过大的原因，没有以前快了，但几十几百的速度，也够了。
命令：sudo gedit /etc/apt/sources.list
用你选择的源覆盖原先的，注意网页复制可能产生多余的空格等，自行去掉。
更新命令，其实系统自己也会自动更新。
sudo apt-get update
sudo apt-get dist-upgrade
#Archive.ubuntu.com更新服务器（欧洲，此为官方源，电信网通用户使用)：
deb intrepid main restricted universe multiversedeb intrepid-security main restricted universe multiversedeb intrepid-updates main restricted universe multiversedeb intrepid-proposed main restricted universe multiversedeb intrepid-backports main restricted universe multiversedeb-src intrepid main restricted universe multiversedeb-src intrepid-security main restricted universe multiversedeb-src intrepid-updates main restricted universe multiversedeb-src intrepid-proposed main restricted universe multiversedeb-src intrepid-backports main restricted universe multiverse
#Ubuntu.cn99.com更新服务器（江苏省常州市电信，推荐电信用户使用）：
deb intrepid main restricted universe multiversedeb intrepid-security main restricted universe multiversedeb intrepid-updates main restricted universe multiversedeb intrepid-proposed main restricted universe multiversedeb intrepid-backports main restricted universe multiversedeb-src intrepid main restricted universe multiversedeb-src intrepid-security main restricted universe multiversedeb-src intrepid-updates main restricted universe multiversedeb-src intrepid-proposed main restricted universe multiversedeb-src intrepid-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 intrepid main restricted universe multiversedeb intrepid-security main restricted universe multiversedeb intrepid-updates main restricted universe multiversedeb intrepid-backports main restricted universe multiversedeb intrepid-proposed main restricted universe multiversedeb-src intrepid main restricted universe multiversedeb-src intrepid-security main restricted universe multiversedeb-src intrepid-updates main restricted universe multiversedeb-src intrepid-backports main restricted universe multiversedeb-src intrepid-proposed main restricted universe multiverse
#Mirror.lupaworld.com更新服务器（浙江省杭州市双线服务器）：
deb intrepid main restricted universe multiversedeb intrepid-security main restricted universe multiversedeb intrepid-updates main restricted universe multiversedeb intrepid-backports main restricted universe multiversedeb intrepid-proposed main restricted universe multiversedeb-src intrepid main restricted universe multiversedeb-src intrepid-security main restricted universe multiversedeb-src intrepid-updates main restricted universe multiversedeb-src intrepid-backports main restricted universe multiversedeb-src intrepid-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/ intrepid main restricted universe multiversedeb ftp://ubuntu.realss.cn/ubuntu/ intrepid-backports restricted universe multiversedeb ftp://ubuntu.realss.cn/ubuntu/ intrepid-proposed main restricted universe multiversedeb ftp://ubuntu.realss.cn/ubuntu/ intrepid-security main restricted universe multiversedeb ftp://ubuntu.realss.cn/ubuntu/ intrepid-updates main restricted universe multiversedeb-src ftp://ubuntu.realss.cn/ubuntu/ intrepid main restricted universe multiversedeb-src ftp://ubuntu.realss.cn/ubuntu/ intrepid-backports main restricted universe multiversedeb-src ftp://ubuntu.realss.cn/ubuntu/ intrepid-proposed main restricted universe multiversedeb-src ftp://ubuntu.realss.cn/ubuntu/ intrepid-security main restricted universe multiversedeb-src ftp://ubuntu.realss.cn/ubuntu/ intrepid-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 intrepid main multiverse restricted universedeb intrepid-backports main multiverse restricted universedeb intrepid-proposed main multiverse restricted universedeb intrepid-security main multiverse restricted universedeb intrepid-updates main multiverse restricted universedeb-src intrepid main multiverse restricted universedeb-src intrepid-backports main multiverse restricted universedeb-src intrepid-proposed main multiverse restricted universedeb-src intrepid-security main multiverse restricted universedeb-src intrepid-updates main multiverse restricted universe #== 如果无法解析uestc.edu.cn域名，请使用以下地址 == deb intrepid main multiverse restricted universedeb intrepid-backports main multiverse restricted universedeb intrepid-proposed main multiverse restricted universedeb intrepid-security main multiverse restricted universedeb intrepid-updates main multiverse restricted universedeb-src intrepid main multiverse restricted universedeb-src intrepid-backports main multiverse restricted universedeb-src intrepid-proposed main multiverse restricted universedeb-src intrepid-security main multiverse restricted universedeb-src intrepid-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）：