apt-get troubles

["cmo1@libero.it" <cmo1@libero.it>]

Dear all,
I have this messages when I try to do...do you help me?
Thanks in advance

Kind regards

Carmelo

argon:/home/carmelo# apt-get update
Hit http://ftp.it.debian.org unstable/main Packages
Hit http://ftp.it.debian.org unstable/main Release
Hit http://ftp.it.debian.org unstable/contrib Packages
Hit http://ftp.it.debian.org unstable/contrib Release
Hit http://ftp.it.debian.org unstable/non-free Packages
Hit http://ftp.it.debian.org unstable/non-free Release
Err http://ftp.it.debian.org unstable/non-US/main Packages
  404 Not Found [IP: 213.92.8.5 80]
Ign http://ftp.it.debian.org unstable/non-US/main Release
Err http://ftp.it.debian.org unstable/non-US/contrib Packages
  404 Not Found [IP: 213.92.8.5 80]
Ign http://ftp.it.debian.org unstable/non-US/contrib Release
Err http://ftp.it.debian.org unstable/non-US/non-free Packages
  404 Not Found [IP: 213.92.8.5 80]
Ign http://ftp.it.debian.org unstable/non-US/non-free Release
Failed to fetch http://ftp.it.debian.org/debian-non-US/dists/unstable/non-US/main/binary-i386/Packages  404 Not Found [IP: 213.92.8.5 80]
Failed to fetch http://ftp.it.debian.org/debian-non-US/dists/unstable/non-US/contrib/binary-i386/Packages  404 Not Found [IP: 213.92.8.5 80]
Failed to fetch http://ftp.it.debian.org/debian-non-US/dists/unstable/non-US/non-free/binary-i386/Packages  404 Not Found [IP: 213.92.8.5 80]
Reading Package Lists... Error!
E: Dynamic MMap ran out of room
E: Error occured while processing timemachine (NewVersion1)
E: Problem with MergeList /var/lib/apt/lists/ftp.it.debian.org_debian_dists_unstable_main_binary-i386_Packages
E: The package lists or status file could not be parsed or opened.
argon:/home/carmelo#



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