Доброе время суток!

Есть два сервера подключенные к одному каналу интернет.
Интернет есть на каждом из серверов, команда apt-get update успешно проходит на обеих.
На одном из серверов команды apt-get upgrade, apt-get dist-upgrade показывают обновления и устанавливают их (конечно при их наличии в офф. репозиториях),
на втором в это же время эти команды не находят доступных обновлений.

Сервер 1:
root@net:~# uname -a
Linux net 2.6.32-22-generic-pae #32-Ubuntu SMP Fri Apr 16 09:39:35 UTC 2010 i686 GNU/Linux
Сервер 2:
root@mx:~# uname -a
Linux mx 2.6.31-20-generic-pae #58-Ubuntu SMP Fri Mar 12 06:25:51 UTC 2010 i686 GNU/Linux
root@mx:~# apt-get update
Hit http://ua.archive.ubuntu.com lucid Release.gpg
Hit http://security.ubuntu.com lucid-security Release.gpg
Ign http://ua.archive.ubuntu.com/ubuntu/ lucid/main Translation-en_US
Ign http://security.ubuntu.com/ubuntu/ lucid-security/main Translation-en_US
Ign http://ua.archive.ubuntu.com/ubuntu/ lucid/restricted Translation-en_US
Ign http://ua.archive.ubuntu.com/ubuntu/ lucid/universe Translation-en_US
Ign http://ua.archive.ubuntu.com/ubuntu/ lucid/multiverse Translation-en_US
Hit http://ua.archive.ubuntu.com lucid-updates Release.gpg
Ign http://ua.archive.ubuntu.com/ubuntu/ lucid-updates/main Translation-en_US
Ign http://ua.archive.ubuntu.com/ubuntu/ lucid-updates/restricted Translation-en_US
Ign http://ua.archive.ubuntu.com/ubuntu/ lucid-updates/universe Translation-en_US
Ign http://ua.archive.ubuntu.com/ubuntu/ lucid-updates/multiverse Translation-en_US
Ign http://security.ubuntu.com/ubuntu/ lucid-security/restricted Translation-en_US
Ign http://security.ubuntu.com/ubuntu/ lucid-security/universe Translation-en_US
Ign http://security.ubuntu.com/ubuntu/ lucid-security/multiverse Translation-en_US
Hit http://ua.archive.ubuntu.com lucid Release
Hit http://security.ubuntu.com lucid-security Release
Hit http://ua.archive.ubuntu.com lucid-updates Release
Hit http://security.ubuntu.com lucid-security/main Packages
Hit http://ua.archive.ubuntu.com lucid/main Packages
Hit http://ua.archive.ubuntu.com lucid/restricted Packages
Hit http://ua.archive.ubuntu.com lucid/main Sources
Hit http://ua.archive.ubuntu.com lucid/restricted Sources
Hit http://ua.archive.ubuntu.com lucid/universe Packages
Hit http://security.ubuntu.com lucid-security/restricted Packages
Hit http://security.ubuntu.com lucid-security/main Sources
Hit http://security.ubuntu.com lucid-security/restricted Sources
Hit http://security.ubuntu.com lucid-security/universe Packages
Hit http://ua.archive.ubuntu.com lucid/universe Sources
Hit http://ua.archive.ubuntu.com lucid/multiverse Packages
Hit http://ua.archive.ubuntu.com lucid/multiverse Sources
Hit http://ua.archive.ubuntu.com lucid-updates/main Packages
Hit http://ua.archive.ubuntu.com lucid-updates/restricted Packages
Hit http://ua.archive.ubuntu.com lucid-updates/main Sources
Hit http://ua.archive.ubuntu.com lucid-updates/restricted Sources
Hit http://ua.archive.ubuntu.com lucid-updates/universe Packages
Hit http://security.ubuntu.com lucid-security/universe Sources
Hit http://security.ubuntu.com lucid-security/multiverse Packages
Hit http://security.ubuntu.com lucid-security/multiverse Sources
Hit http://ua.archive.ubuntu.com lucid-updates/universe Sources
Hit http://ua.archive.ubuntu.com lucid-updates/multiverse Packages
Hit http://ua.archive.ubuntu.com lucid-updates/multiverse Sources
Reading package lists... Done
root@mx:~# apt-get upgrade
Reading package lists... Done
Building dependency tree
Reading state information... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
root@mx:~# apt-get dist-upgrade
Reading package lists... Done
Building dependency tree
Reading state information... Done
Calculating upgrade... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
Подскажите как починить?