After the source is changed, executing apt-Get update will always be blocked at [23% waiting for headers.
I read some solutions online, including deleting all the content in the archieves folder and changing the source content. I have tried both of them, but it seems that it is more effective to change the source.
Record the source for this change-September 21, 2014 08:54:06
deb http://mirrors.163.com/debian/ squeeze main non-free contrib deb http://mirrors.163.com/debian/ squeeze-proposed-updates main contrib non-free deb http://mirrors.163.com/debian-security/ squeeze/updates main contrib non-free deb-src http://mirrors.163.com/debian/ squeeze main non-free contrib deb-src http://mirrors.163.com/debian/ squeeze-proposed-updates main contrib non-free deb-src http://mirrors.163.com/debian-security/ squeeze/updates main contrib non-free deb http://ftp.sjtu.edu.cn/debian/ squeeze main non-free contrib deb http://ftp.sjtu.edu.cn/debian/ squeeze-proposed-updates main contrib non-free deb http://ftp.sjtu.edu.cn/debian-security/ squeeze/updates main contrib non-free deb-src http://ftp.sjtu.edu.cn/debian/ squeeze main non-free contrib deb-src http://ftp.sjtu.edu.cn/debian/ squeeze-proposed-updates main contrib non-free deb-src http://ftp.sjtu.edu.cn/debian-security/ squeeze/updates main contrib non-free
Source from: http://blog.csdn.net/byane/article/details/8266792
To back up data:
CP/etc/APT/sources. LIST/etc/APT/sources. listbak # back up the original configuration file
Bon appetite ~
Debian available source -- 23% waiting for headers Solution