These related to the rights issue, has permission to modify, no need to get permission. Next we need to find /etc/apt/sources.list file.
Then put it inside the contents are deleted, replaced the following URL! ! !
If Telecom, please use the following:
deb http://Ubuntu.csie.ntu.edu.tw/ubuntu/ jaunty main restricted universe multiverse
deb-src http://Ubuntu.csie.ntu.edu.tw/ubuntu/ jaunty main restricted universe multiverse
deb http://Ubuntu.csie.ntu.edu.tw/ubuntu/ jaunty-updates main restricted universe multiverse
deb-src http://Ubuntu.csie.ntu.edu.tw/ubuntu/ jaunty-updates main restricted universe multiverse
deb http://Ubuntu.csie.ntu.edu.tw/ubuntu/ jaunty-backports main restricted universe multiverse
deb-src http://Ubuntu.csie.ntu.edu.tw/ubuntu/ jaunty-backports main restricted universe multiverse
deb http://Ubuntu.csie.ntu.edu.tw/ubuntu/ jaunty-security main restricted universe multiverse
deb-src http://Ubuntu.csie.ntu.edu.tw/ubuntu/ jaunty-security main restricted universe multiverse
deb http://Ubuntu.csie.ntu.edu.tw/ubuntu/ jaunty-proposed main multiverse restricted universe
deb-src http://Ubuntu.csie.ntu.edu.tw/ubuntu/ jaunty-proposed main restricted universe multiverse
If you are or Netcom Education Network, please use the source of my alma mater, especially the education network, quickly under:
deb http://ftp.sjtu.edu.cn/Ubuntu/ jaunty main Tel Restricted Universe Multiverse
deb HTTP: / /ftp.sjtu.edu.cn/Ubuntu/ jaunty-backports main Restricted Universe Multiverse
the deb http://ftp.sjtu.edu.cn/Ubuntu/ jaunty Proposed main-Restricted Universe Multiverse
the deb http://ftp.sjtu.edu .cn / the Ubuntu / jaunty main Security-Restricted Universe Multiverse
the deb http://ftp.sjtu.edu.cn/Ubuntu/ jaunty-Restricted Universe Multiverse main Updates
the deb the src- http://ftp.sjtu.edu.cn/Ubuntu / jaunty main Restricted Universe Multiverse
the deb the src- http://ftp.sjtu.edu.cn/Ubuntu/ jaunty-backports main multiverse restricted universe
deb-src http://ftp.sjtu.edu.cn/Ubuntu/ jaunty-proposed main multiverse restricted universe
deb-src http://ftp.sjtu.edu.cn/Ubuntu/ jaunty-security main multiverse restricted universe
deb-src http://ftp.sjtu.edu.cn/Ubuntu/ jaunty-updates main multiverse restricted universe