Sourcelist Debian 6.0 com problemas

Olá prezados,

Me tornei um debian user recentemente, preciso atualizar meu php, mas para isso preciso dar um update nos meus pacotes. A questão é que caso eu dou um apt-get update ele me retorna esse erro:

Error packages deb http://security.debian.org/ squeeze/updates main contrib non-free (1)

e não atualiza.

Comentando essa linha na source list ele da como:
Lendo listas de pacotes... Pronto

Mas não sei se realmente atualizou.

Alguem pode me ajudar? Obrigado desde já

posta o seu /etc/apt/sources.list

A minha lista aqui:

#############################################################
################### OFFICIAL DEBIAN REPOS ###################
#############################################################

###### Debian Main Repos
deb http://ftp.br.debian.org/debian/ squeeze main contrib non-free

###### Debian Update Repos
deb http://security.debian.org/ squeeze/updates main contrib non-free

##############################################################
##################### UNOFFICIAL REPOS #######################
##############################################################

#### Debian Multimedia - http://www.debian-multimedia.org/
## apt-get update && apt-get install debian-multimedia-keyring && apt-get update
deb http://www.debian-multimedia.org stable main non-free

#### Debian Backports - http://backports.debian.org/
deb http://backports.debian.org/debian-backports squeeze-backports main contrib non-free
### Backports Iceweasel Debian Mozilla Team
deb http://mozilla.debian.net/ squeeze-backports iceweasel-release

### THIS FILE IS AUTOMATICALLY CONFIGURED ###
# You may comment out this entry, but any other modifications may be lost.
deb http://dl.google.com/linux/chrome/deb/ stable main

#### Wine - http://www.winehq.org/
## wget -O - http://www.lamaresh.net/apt/key.gpg | sudo apt-key add -
deb http://www.lamaresh.net/apt squeeze main

######
deb http://ftp.br.debian.org/debian/ squeeze main non-free contrib
deb-src http://ftp.br.debian.org/debian/ squeeze main non-free contrib

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

# squeeze-updates, previously known as 'volatile'
deb http://ftp.br.debian.org/debian/ squeeze-updates main contrib non-free
deb-src http://ftp.br.debian.org/debian/ squeeze-updates main contrib non-free

#####
O original do debian é este remove o começo do seu e adiciona este.

Após isso:
aptitude update && aptitude upgrade

Ai é só reinstalar o php

Obrigado Galera, as 12:00 vou postar minha sourcelist, e tentar com as alterações sugeridas.

Obrigado pela atenção desde já Galera!

Ae Galera segue minha sourcelist

#############################################################
################### OFFICIAL DEBIAN REPOS ###################
#############################################################

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

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

# squeeze-updates, previously known as 'volatile'
deb http://ftp.br.debian.org/debian/ squeeze-updates main contrib non-free
deb-src http://ftp.br.debian.org/debian/ squeeze-updates main contrib non-free

##############################################################
##################### UNOFFICIAL REPOS #######################
##############################################################

#### Debian Multimedia - http://www.debian-multimedia.org/
## apt-get update && apt-get install debian-multimedia-keyring && apt-get update
deb http://www.debian-multimedia.org stable main non-free

#### Debian Backports - http://backports.debian.org/
deb http://backports.debian.org/debian-backports squeeze-backports main contrib non-free
### Backports Iceweasel Debian Mozilla Team
deb http://mozilla.debian.net/ squeeze-backports iceweasel-release

### THIS FILE IS AUTOMATICALLY CONFIGURED ###
# You may comment out this entry, but any other modifications may be lost.
deb http://dl.google.com/linux/chrome/deb/ stable main

#### Wine - http://www.winehq.org/
## wget -O - http://www.lamaresh.net/apt/key.gpg | sudo apt-key add -
deb http://www.lamaresh.net/apt squeeze main


Mas até para consulta segue a solução do problema:


Usei sourcelist postada por vcs com o valor corrigido conforme solicitado. Em seguida dei o apt-get update , atualizou os pacotes, porém alguns deram erro de chave, exemplo:

GPG error: ftp://ftp.nerim.net etch Release: As assinaturas a seguir não puderam ser verificadas devido a chave pública não estar disponível : NO_PUBKEY 07DC563D1F41B907

Pesquisei e apliquei o comando

# apt-get install debian-keyring

Em seguida apliquei o comando abaixo em cada repositório que deu o erro:

# gpg --keyring /usr/share/keyrings/debian-keyring.gpg \
-a --export Coloca aqui o numero da CHAVE que deu erro | apt-key add -

Obrigado pelo dispos do tempo da galera que ajudou! valeu.

Its free, use Linux!