在Debian使用apt-get update出现"E: Some index files failed to download, they have been ignored, or old ones used instead."的错误提示问题。

解决方法：
一、替换文件：/etc/apt/sources.list
二、替换文件中的源
1、deb http://mirrors.aliyun.com/debian wheezy main contrib non-free
2、deb-src http://mirrors.aliyun.com/debian wheezy main contrib non-free
3、deb http://mirrors.aliyun.com/debian wheezy-updates main contrib non-free
4、deb-src http://mirrors.aliyun.com/debian wheezy-updates main contrib non-free
5、deb http://mirrors.aliyun.com/debian-security wheezy/updates main contrib non-free
6、deb-src http://mirrors.aliyun.com/debian-security wheezy/updates main contrib non-free
再使用apt-get update就可以了。