网通的兄弟快过来，最快的官方APT源在这里，保证速度可以到最高（推荐）

aaduck

deb http://archive.ubuntu.com/ubuntu dapper main restricted
deb-src http://archive.ubuntu.com/ubuntu dapper main restricted

## Uncomment the following two lines to add software from the 'universe'
## repository.
## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team, and may not be under a free licence. Please satisfy yourself as to
## your rights to use the software. Also, please note that software in
## universe WILL NOT receive any review or updates from the Ubuntu security
## team.
# deb http://archive.ubuntu.com/ubuntu dapper universe
# deb-src http://archive.ubuntu.com/ubuntu dapper universe

deb http://security.ubuntu.com/ubuntu dapper-security main restricted
deb-src http://security.ubuntu.com/ubuntu dapper-security main restricted






这可是我搞了一天的收获啊！

DoDo

冒昧的问一句, 这不是官方的源么?

winsphinx

各地速度不一样
中国的互联网太复杂了，中国特色

windyzhousir

这是ubuntu中文网推荐的教育网源， 我也是网通的网络试用了一下速度非常快，基本达到我的线路带宽（230KB/S），推荐网通的用户使用，如果你使用的是dapper，那就直接把breezy更换为dapper就可以了。
deb http://ftp.sjtu.edu.cn/ubuntu/ breezy main multiverse restricted universe
deb http://ftp.sjtu.edu.cn/ubuntu/ breezy-backports main multiverse restricted universe
deb http://ftp.sjtu.edu.cn/ubuntu/ breezy-proposed main multiverse restricted universe
deb http://ftp.sjtu.edu.cn/ubuntu/ breezy-security main multiverse restricted universe
deb http://ftp.sjtu.edu.cn/ubuntu/ breezy-updates main multiverse restricted universe
deb http://ftp.sjtu.edu.cn/ubuntu-cn/ breezy main multiverse restricted universe bleeding

lincomet

我家里SJTU的镜像慢得像蜗牛爬……

aaduck

跟楼上的情况一样,我网通的用CN99比SJTU还要快一点,都不超过20K

geyinan

这个就是官方的源嘛，我用的就是这个，100K。但是有些东东不全的说。

cho

电信的用cn99比较好

lookee

dxmirror.net, lupaworld.com, cn.archive.ubuntu.com都很快,电信线路