把下面的内容加进你的/etc/apt/source.list，apt-get update，然后你会发现更新依赖库时非常的迅速。
# 上海交大的源
deb lenny main non-free contrib
deb lenny-proposed-updates main non-free contrib
deb -security lenny/updates main non-free contrib
# 163的源
deb lenny main non-free contrib
deb lenny-proposed-updates main non-free contrib
deb -security lenny/updates main non-free contrib
