Something

pinguix# apt-get update
Ign cdrom://[Debian GNU/Linux 4.0 r0 _Etch_ - Official i386 NETINST Binary-1 20070407-11:29] etch Release.gpg
Ign cdrom://[Debian GNU/Linux 4.0 r0 _Etch_ - Official i386 NETINST Binary-1 20070407-11:29] etch Release
Ign cdrom://[Debian GNU/Linux 4.0 r0 _Etch_ - Official i386 NETINST Binary-1 20070407-11:29] etch/contrib Packages/DiffIndex
Ign cdrom://[Debian GNU/Linux 4.0 r0 _Etch_ - Official i386 NETINST Binary-1 20070407-11:29] etch/main Packages/DiffIndex
Des:1 http://nisamox.fciencias.unam.mx etch Release.gpg [378B]
Obj http://nisamox.fciencias.unam.mx etch Release
Des:2 http://www.prato.linux.it xgl/ Release.gpg [189B]
Obj http://www.prato.linux.it xgl/ Release
Err http://www.prato.linux.it xgl/ Release

Des:3 http://www.prato.linux.it xgl/ Release [1642B]
Ign http://www.prato.linux.it xgl/ Release
Ign http://nisamox.fciencias.unam.mx etch/main Packages/DiffIndex
Ign http://www.prato.linux.it xgl/ Packages/DiffIndex
Ign http://www.prato.linux.it xgl/ Sources/DiffIndex
Des:4 http://debian.beryl-project.org etch Release.gpg [191B]
Obj http://www.prato.linux.it xgl/ Packages
Ign http://nisamox.fciencias.unam.mx etch/main Sources/DiffIndex
Des:5 http://security.debian.org etch/updates Release.gpg [189B]
Obj http://debian.beryl-project.org etch Release
Obj http://www.prato.linux.it xgl/ Sources
Obj http://nisamox.fciencias.unam.mx etch/main Packages
Des:6 http://security.debian.org etch/updates Release [22.5kB]
Ign http://debian.beryl-project.org etch/main Packages/DiffIndex
Obj http://nisamox.fciencias.unam.mx etch/main Sources
Ign http://debian.beryl-project.org etch/main Sources/DiffIndex
Obj http://debian.beryl-project.org etch/main Packages
Obj http://debian.beryl-project.org etch/main Sources
Ign http://security.debian.org etch/updates/main Packages/DiffIndex
Ign http://security.debian.org etch/updates/contrib Packages/DiffIndex
Ign http://security.debian.org etch/updates/main Sources/DiffIndex
Ign http://security.debian.org etch/updates/contrib Sources/DiffIndex
Des:7 http://security.debian.org etch/updates/main Packages [58.9kB]
Obj http://security.debian.org etch/updates/contrib Packages
Des:8 http://security.debian.org etch/updates/main Sources [8686B]
Obj http://security.debian.org etch/updates/contrib Sources
Descargados 92.1kB en 41s (2203B/s)
Leyendo lista de paquetes... Hecho
W: GPG error: http://www.prato.linux.it xgl/ Release: Las firmas siguientes no se pudieron verificar porque su llave pública no está disponible: NO_PUBKEY 6864730DF095E5E4
W: Tal vez quiera ejecutar 'apt-get update' para corregir estos problemas