网上找来的Debian sources.list，中科大的，速度不错（我家的网络好像是网通的）。为广而播之，就粘贴一份放自己博客上吧。
deb http://debian.ustc.edu.cn/debian stable main contrib non-free
deb-src http://debian.ustc.edu.cn/debian stable main contrib non-free
deb http://debian.ustc.edu.cn/debian proposed-updates main contrib non-free
deb-src http://debian.ustc.edu.cn/debian proposed-updates main contrib non-free
deb http://debian.ustc.edu.cn/debian-security stable/updates main
#非官方软件包仓库
deb http://debian.ustc.edu.cn/debian-uo sid marillat rareware misc ustc
deb-src http://debian.ustc.edu.cn/debian-uo sid marillat rareware misc ustc
deb http://security.debian.org/ stable/updates main contrib non-free
顺便把ubuntu9.04的也放一个吧，省得每次都去google，也是中科大的：
deb http://debian.ustc.edu.cn/ubuntu/ jaunty main restricted universe multiverse
deb http://debian.ustc.edu.cn/ubuntu/ jaunty-backports restricted universe multiverse
deb http://debian.ustc.edu.cn/ubuntu/ jaunty-proposed main restricted universe multiverse
deb http://debian.ustc.edu.cn/ubuntu/ jaunty-security main restricted universe multiverse
deb http://debian.ustc.edu.cn/ubuntu/ jaunty-updates main restricted universe multiverse
deb-src http://debian.ustc.edu.cn/ubuntu/ jaunty main restricted universe multiverse
deb-src http://debian.ustc.edu.cn/ubuntu/ jaunty-backports main restricted universe multiverse
deb-src http://debian.ustc.edu.cn/ubuntu/ jaunty-proposed main restricted universe multiverse
deb-src http://debian.ustc.edu.cn/ubuntu/ jaunty-security main restricted universe multiverse
deb-src http://debian.ustc.edu.cn/ubuntu/ jaunty-updates main restricted universe multiverse