Repositorios Debian

Si lo quieren ocupar en una determinada versión de Debian solo deben ir cambiando el nombre a la versión que queremos.
ejemplo si dice lenny y lo queremos para testing solo reemplazar lenny por testing.
asi:
Original:

deb http://ftp.cl.debian.org/debian lenny main

Modificado:

deb http://ftp.cl.debian.org/debian testing main

Para agregarlos a su lista de repositorios deben pegarlos en:
/etc/apt/sources.list 
así:

gedit /etc/apt/sources.list
o
nano /etc/apt/sources.list

Nuevos squeeze stable 6

# free
deb http://cdn.debian.net/debian/ squeeze main
deb-src http://cdn.debian.net/debian/ squeeze main

deb http://debian.netlinux.cl/debian/ squeeze main
deb-src http://debian.netlinux.cl/debian/ squeeze main

deb http://ftp.cl.debian.org/debian squeeze main
deb-src http://ftp.cl.debian.org/debian squeeze main

# Wine // wget http://www.lamaresh.net/apt/key.gpg && apt-key add key.gpg
deb http://www.lamaresh.net/apt squeeze main

#google chrome // wget -q -O – http://dl.google.com/linux/linux_signing_key.pub | sudo apt-key add –
deb http://dl.google.com/linux/deb/ stable main

# non-free
#wget -q -O - https://dl-ssl.google.com/linux/linux_signing_key.pub | apt-key add -
deb http://dl.google.com/linux/deb/ testing non-free

#apt-key adv --keyserver pgp.mit.edu --recv-keys 0xd66b746e
#deb http://download.skype.com/linux/repos/debian/ stable non-free

deb http://http.us.debian.org/debian/ squeeze main non-free
deb-src http://http.us.debian.org/debian/ squeeze main non-free

deb ftp://ftp.mx.debian.org/debian squeeze main contrib non-free
deb-src ftp://ftp.mx.debian.org/debian squeeze main contrib non-free

#deb http://debian.ubiobio.cl/debian/ squeeze main non-free
#deb-src http://debian.ubiobio.cl/debian/ squeeze main non-free

deb http://debian.utalca.cl/debian/ squeeze main non-free
deb-src http://debian.utalca.cl/debian/ squeeze main non-free

# Compiz Fusion // wget http://download.tuxfamily.org/shames/A42A6CF5.gpg -O- | apt-key add -
#deb http://download.tuxfamily.org/shames/debian-sid/desktopfx/unstable/ ./

### multimedia & non-free multimedia // apt-get install debian-multimedia-keyring ###
deb http://www.debian-multimedia.org squeeze main

#Repositorios multimedia
deb http://www.debian-multimedia.org/ squeeze main non-free
deb-src http://www.debian-multimedia.org/ squeeze main non-free

# ACTUALIZACIONES DE SEGURIDAD
deb http://security.debian.org/ squeeze/updates main contrib
deb-src http://security.debian.org/ squeeze/updates main contrib

# squeeze-updates, previously known as 'volatile'
deb http://cdn.debian.net/debian/ squeeze-updates main contrib
deb-src http://cdn.debian.net/debian/ squeeze-updates main contrib

Nuevos lenny

# free
deb http://debian.netlinux.cl/debian/ lenny main
deb-src http://debian.netlinux.cl/debian/ lenny main

deb http://ftp.cl.debian.org/debian lenny main
deb-src http://ftp.cl.debian.org/debian lenny main

deb http://volatile.debian.org/debian-volatile lenny/volatile main contrib
deb-src http://volatile.debian.org/debian-volatile lenny/volatile main contrib

# non-free
deb http://http.us.debian.org/debian/ lenny main non-free
deb-src http://http.us.debian.org/debian/ lenny main non-free

deb ftp://ftp.mx.debian.org/debian lenny main contrib non-free
deb-src ftp://ftp.mx.debian.org/debian lenny main contrib non-free

deb http://debian.ubiobio.cl/debian/ lenny main non-free
deb-src http://debian.ubiobio.cl/debian/ lenny main non-free

deb http://debian.utalca.cl/debian/ lenny main non-free
deb-src http://debian.utalca.cl/debian/ lenny main non-free

# Compiz Fusion // wget http://download.tuxfamily.org/shames/A42A6CF5.gpg -O- | apt-key add -
deb http://download.tuxfamily.org/shames/debian-lenny/desktopfx/unstable/ ./

### multimedia & non-free multimedia // apt-get install debian-multimedia-keyring ###
deb http://www.debian-multimedia.org lenny main

# ACTUALIZACIONES DE SEGURIDAD
deb http://security.debian.org/ lenny/updates main contrib
deb-src http://security.debian.org/ lenny/updates main contrib

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Antiguos

### Oficiales Repositorios debian etch ###
deb http://ftp.cl.debian.org/debian etch main
deb-src http://ftp.cl.debian.org/debian etch main

deb http://ftp.debian.org/debian/ etch main contrib non-free
deb-src http://ftp.debian.org/debian/ etch main contrib non-free

deb http://ftp.es.debian.org/debian/ etch main contrib non-free
deb-src http://ftp.es.debian.org/debian/ etch main contrib non-free

deb http://security.debian.org/ etch/updates main contrib non-free
deb-src http://security.debian.org/ etch/updates main contrib non-free

### multimedia & non-free multimedia ###
deb http://www.debian-multimedia.org etch main

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ya acá les dejo los repositorios  que uso y la idea es ir complementando para tener una mejor configuración en general y tener variedad. Ya ojala les guste.