Debian 4 - sources.list

Here is my APT sources.list

#
deb cdrom:[Debian GNU/Linux 4.0 r0 _Etch_ - Official i386 DVD Binary-1 20070407-11:40]/ etch contrib main
deb cdrom:[Debian GNU/Linux 4.0 r0 _Etch_ - Official i386 DVD Binary-2 20070407-11:40]/ etch contrib main
deb cdrom:[Debian GNU/Linux 4.0 r0 _Etch_ - Official i386 DVD Binary-3 20070407-11:40]/ etch contrib main

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

deb ftp://ftp.debian.org/debian unstable main contrib non-free
#deb ftp://ftp.debian.org/debian testing main contrib non-free