转自：香神无涯
sudo cp /etc/apt/sources.list /etc/apt/sources.list_bak #备份一下软件源
sudo vi /etc/apt/sources.list
加入如下内容即可
# 网易163更新服务器：
deb http://mirrors.163.com/debian/ squeeze main non-free contrib
deb http://mirrors.163.com/debian/ squeeze-proposed-updates main non-free contrib
deb-src http://mirrors.163.com/debian/ squeeze main non-free contrib
deb-src http://mirrors.163.com/debian/ squeeze-proposed-updates main non-free contrib
# sohu 更新服务器：
deb http://mirrors.sohu.com/debian/ lenny main non-free contrib
deb http://mirrors.sohu.com/debian/ lenny-proposed-updates main non-free contrib
deb-src http://mirrors.sohu.com/debian/ lenny main non-free contrib
deb-src http://mirrors.sohu.com/debian/ lenny-proposed-updates main non-free contrib