Squeeze. apt-get update failed to fetch .../binary-i386/Packages.gz

[Mark Goldshtein <mark.goldshtein@gmail.com>]

Hello, list!

Today's log of apt-get update:
[...]
Err http://http.us.debian.org squeeze/updates/contrib i386 Packages
  404  Not Found [IP: 35.9.37.225 80]
W: Failed to fetch
http://http.us.debian.org/debian/dists/squeeze/updates/contrib/binary-i386/Packages.gz
 404  Not Found [IP: 35.9.37.225 80]

E: Some index files failed to download, they have been ignored, or old
ones used instead.

Is that temporary problem or there is need to change something in
source.list? Before this, all updates went smooth.

$ cat /etc/apt/sources.list
## Debian Squeeze sources.list

## Debian security updates:
deb http://http.us.debian.org/debian/ squeeze/updates contrib

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

## Debian Multimedia - Christian Marrillat repository:
deb http://www.debian-multimedia.org squeeze main non-free


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

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

deb-src http://www.debian-multimedia.org testing main

Thanks in advance for your time!


-- 
Sincerely Yours'
Mark Goldshtein