W: Couldn't stat source package list http://debian-multimedia.org sarge/non-free Packages (/var/lib/apt/lists/debian-multimedia.org_dists_sarge_non-free_binary-i386_Packages) - stat (2 No such file or directory)
W: Couldn't stat source package list http://debian-multimedia.org sarge/contrib Packages (/var/lib/apt/lists/debian-multimedia.org_dists_sarge_contrib_binary-i386_Packages) - stat (2 No such file or directory)
W: Couldn't stat source package list http://debian-multimedia.org sarge/non-free Packages (/var/lib/apt/lists/debian-multimedia.org_dists_sarge_non-free_binary-i386_Packages) - stat (2 No such file or directory)
W: Couldn't stat source package list http://debian-multimedia.org sarge/contrib Packages (/var/lib/apt/lists/debian-multimedia.org_dists_sarge_contrib_binary-i386_Packages) - stat (2 No such file or directory)
W: You may want to run apt-get update to correct these problems
debian:/tmp/updates# apt-get update
----------------<snip>--------------------------------
----------------</snip>-------------------------------
Fetched 3859B in 24s (159B/s)
Failed to fetch ftp://mirror.cs.wisc.edu/pub/mirrors/linux/debian/dists/stable/Release.gpg  Server closed the connection [IP: 128.105.103.11 21]
Failed to fetch http://debian-multimedia.org/dists/sarge/non-free/binary-i386/Packages.gz  404 Not Found
Failed to fetch http://debian-multimedia.org/dists/sarge/contrib/binary-i386/Packages.gz  404 Not Found
Reading package lists... Done
W: GPG error: http://debian-multimedia.org sarge Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 07DC563D1F41B907
W: Couldn't stat source package list http://debian-multimedia.org sarge/non-free Packages (/var/lib/apt/lists/debian-multimedia.org_dists_sarge_non-free_binary-i386_Packages) - stat (2 No such file or directory)
W: Couldn't stat source package list http://debian-multimedia.org sarge/contrib Packages (/var/lib/apt/lists/debian-multimedia.org_dists_sarge_contrib_binary-i386_Packages) - stat (2 No such file or directory)
W: Couldn't stat source package list http://debian-multimedia.org sarge/non-free Packages (/var/lib/apt/lists/debian-multimedia.org_dists_sarge_non-free_binary-i386_Packages) - stat (2 No such file or directory)
W: Couldn't stat source package list http://debian-multimedia.org sarge/contrib Packages (/var/lib/apt/lists/debian-multimedia.org_dists_sarge_contrib_binary-i386_Packages) - stat (2 No such file or directory)
W: You may want to run apt-get update to correct these problems
E: Some index files failed to download, they have been ignored, or old ones used instead.
======================================================================

So, here is my /etc/apt/sources.list file:
=========================================================================
#deb file:///cdrom/ sarge main

deb ftp://mirror.cs.wisc.edu/pub/mirrors/linux/debian/ stable main non-free contrib
deb-src ftp://mirror.cs.wisc.edu/pub/mirrors/linux/debian/ stable main

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

deb http://debian-multimedia.org/ sarge main non-free contrib

deb ftp://mirrors.geeks.org/debian/ stable main non-free contrib
deb-src ftp://mirrors.geeks.org/debian/ stable main

deb ftp://debian.mirrors.tds.net/debian/ stable main non-free contrib
deb-src ftp://debian.mirrors.tds.net/debian/ stable main

deb http://www.backports.org/debian sarge-backports main contrib non-free
==================================================================================
Are there things that should be changed in my /etc/apt/sources.list file?