[sisyphus] Проблема в работе с АРТ.

[Bear-M-Sol]

Здравствуйте уважаемые, С Новым годом!
Надеюсь на помощь опытных. Что может вызвать нижеприведенную проблему 
при работе с АРТ? Свежие пакеты (alt-gpgkeys-0.1-alt11.i586.rpm и 
apt-conf-sisyphus-1.8-alt1.noarch.rpm) установил. Вот активные строки из 
/etc/apt/sources.list:
...
# Sisyphus
rpm [alt] ftp://ftp.altlinux.ru/pub/distributions/ALTLinux/Sisyphus i586 
sisyphus
rpm-src [alt] ftp://ftp.altlinux.ru/pub/distributions/ALTLinux/Sisyphus 
i586 sisyphus

# Updates
...

-- 
С уважением,
Михаил Солютенко;
bear-m-sol на smtp.ru

[root на general root]# apt-get update
Get:1 ftp://ftp.altlinux.ru i586/base/hashfile [2074B]
Err ftp://ftp.altlinux.ru i586/base/hashfile
   file was not signed with a known key. Check if the proper gpg key was 
imported to your keyring.
Err ftp://ftp.altlinux.ru i586/base/hashfile
   file was not signed with a known key. Check if the proper gpg key was 
imported to your keyring.
Fetched 2074B in 0s (6986B/s)
Failed to fetch hash file: 
ftp://ftp.altlinux.ru/pub/distributions/ALTLinux/Sisyphus/i586/base/hashfile
   file was not signed with a known key. Check if the proper gpg key was 
imported to your keyring.
Failed to fetch hash file: 
ftp://ftp.altlinux.ru/pub/distributions/ALTLinux/Sisyphus/i586/base/hashfile
   file was not signed with a known key. Check if the proper gpg key was 
imported to your keyring.
E: Some of the signed hash files could not be retrieved. Aborting operation.
[root на general root]