Probléme serveur VPS Debian 1&1

Bonjour !
Bon voilà il y'a 2 jours j'ai acheter un serveur VPS et un serveur dédié linux sur 1&1 que j'ai mis ensuite sous debian 4.0 (32bits)
Alors voila enfaite quand je fais " apt-get install vsftpd " il m'écris une erreur celle ci :

Reading package lists... Done 
Building dependency tree... Done 
W: Couldn't stat source package list http://update.onlinehome-server.info etch/main Packages (/var/lib/apt/lists/update.onlinehome-server.info_distribution_debian_dists_etch_main_binary-i386_Packages) - stat (2 No such file or directory) 
W: Couldn't stat source package list http://update.onlinehome-server.info etch/contrib Packages (/var/lib/apt/lists/update.onlinehome-server.info_distribution_debian_dists_etch_contrib_binary-i386_Packages) - stat (2 No such file or directory) 
W: Couldn't stat source package list http://update.onlinehome-server.info etch/non-free Packages (/var/lib/apt/lists/update.onlinehome-server.info_distribution_debian_dists_etch_non-free_binary-i386_Packages) - stat (2 No such file or directory) 
W: Couldn't stat source package list http://update.onlinehome-server.info etch/updates/main Packages (/var/lib/apt/lists/update.onlinehome-server.info_distribution_debian-security_dists_etch_updates_main_binary-i386_Packages) - stat (2 No such file or directory) 
W: Couldn't stat source package list http://update.onlinehome-server.info etch/updates/contrib Packages (/var/lib/apt/lists/update.onlinehome-server.info_distribution_debian-security_dists_etch_updates_contrib_binary-i386_Packages) - stat (2 No such file or directory) 
W: Couldn't stat source package list http://update.onlinehome-server.info etch/updates/non-free Packages (/var/lib/apt/lists/update.onlinehome-server.info_distribution_debian-security_dists_etch_updates_non-free_binary-i386_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 vsftpd

Alors voilà merci d'avance pour toutes vos réponse ! Et aussi j'ai un autre problème mais je sais pas si vous pourriez y faire quelque chose sur mon serveur dédié je ne peut pas changer le systéme d'éxploitation je met Debian et il me remets sous CentOS avec Plesk

TeKnoZeus