apt-get error

[Roberto César Najera Núñez <rob@dcaa.unam.mx>]

Hola lista, quiero instalar el pine para que los clientes puedan leer el
correo

pero me sale este error :


Reading Package Lists... Done
Building Dependency Tree... Done
W: Couldn't stat source package list http://www.braincells.com stable/main
Packages
(/var/lib/apt/lists/www.braincells.com_debian_dists_stable_main_binary-i386_
Packages) - stat (2 No such file or directory)
W: Couldn't stat source package list http://www.braincells.com
stable/contrib Packages
(/var/lib/apt/lists/www.braincells.com_debian_dists_stable_contrib_binary-i3
86_Packages) - stat (2 No such file or directory)
W: Couldn't stat source package list http://www.braincells.com
stable/non-free Packages
(/var/lib/apt/lists/www.braincells.com_debian_dists_stable_non-free_binary-i
386_Packages) - stat (2 No such file or directory)
W: You may want to run apt-get update to correct these problems
E: Couldn't find package pine