[问题]The problem about the install of softwares?

[shuai4503]

I want to install some softwares,
but when i input the command:sudo apt-get update
the outputs are:
Err http://mirror.net9.org dapper/main Packages
400 Bad Request
Err http://mirror.net9.org dapper/multiverse Packages
400 Bad Request
Err http://mirror.net9.org dapper/restricted Packages
400 Bad Request
Err http://mirror.net9.org dapper/universe Packages
400 Bad Request
why???? THANKS~~~~~~~~~

[chinadx]

perhaps there is sth wrong with the sources. Try to add some other sources avilable.or just retry later~

[allstar]

add some other sources

[夕阳]

net9.org确实是有问题，现在它已经被我抛弃了。
而且貌似现在已经关了。