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

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

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