[Comm] Не могу заставить работать apt-get update

["alex popov" <alplists@mail.ru>]

Есть мастер 2.4, хочу прикрутить к нему апдейты, бэкпорты и сизиф
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[root@alp ~]# cat  /etc/apt/sources.list.d/*
# Backports
rpm [aris] ftp://ftp.altlinux.com/pub/distributions/ALTLinux/backports/2.4  
i586 backports
rpm-src [aris]  
ftp://ftp.altlinux.com/pub/distributions/ALTLinux/backports/2.4 i586  
backports
#CDROM
rpm cdrom:[ALT Linux 2.4 Master (Citron) Installation DVD]/ ALTLinux  
contrib main nonfree
# Master updates
rpm [alt] ftp://updates.altlinux.com Master/2.4/i586 updates
rpm-src [alt] ftp://updates.altlinux.com Master/2.4/i586 updates
# Sisyphus
rpm [alt] ftp://ftp.altlinux.com/pub/distributions/ALTLinux/Sisyphus i586  
classic
rpm-src [alt] ftp://ftp.altlinux.com/pub/distributions/ALTLinux/Sisyphus  
i586 classic
rpm [alt] ftp://ftp.altlinux.com/pub/distributions/ALTLinux/Sisyphus i586  
base kernel castle junior master contrib non-free
rpm-src [alt] ftp://ftp.altlinux.com/pub/distributions/ALTLinux/Sisyphus  
i586 base kernel castle junior master contrib non-free
rpm [alt] ftp://ftp.altlinux.com/pub/distributions/ALTLinux/Sisyphus i686  
base
rpm-src [alt] ftp://ftp.altlinux.com/pub/distributions/ALTLinux/Sisyphus  
i686 base
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В итоге при попытке запуска apt-get update получаю:
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[root@alp ~]# apt-get update
Get:1 ftp://updates.altlinux.com Master/2.4/i586 release [705B]
Get:2 ftp://ftp.altlinux.com i586 release [723B]
Err ftp://updates.altlinux.com Master/2.4/i586 release
   file was not signed with a known key. Check if the proper gpg key was  
imported to your keyring.
Err ftp://ftp.altlinux.com i586 release
   file was not signed with a known key. Check if the proper gpg key was  
imported to your keyring.
Get:3 ftp://ftp.altlinux.com i686 release [709B]
Err ftp://ftp.altlinux.com i686 release
   file was not signed with a known key. Check if the proper gpg key was  
imported to your keyring.
Get:4 ftp://ftp.altlinux.com i586 release [700B]
Fetched 2837B in 1s (1935B/s)
Hit ftp://ftp.altlinux.com i586/backports pkglist
Hit ftp://ftp.altlinux.com i586/backports release
Hit ftp://ftp.altlinux.com i586/backports srclist
Failed to fetch  
ftp://ftp.altlinux.com/pub/distributions/ALTLinux/Sisyphus/i586/base/release   
file was not signed with a known key. Check if the proper gpg key was  
imported to your keyring.
Failed to fetch  
ftp://ftp.altlinux.com/pub/distributions/ALTLinux/Sisyphus/i686/base/release   
file was not signed with a known key. Check if the proper gpg key was  
imported to your keyring.
Failed to fetch ftp://updates.altlinux.com/Master/2.4/i586/base/release   
file was not signed with a known key. Check if the proper gpg key was  
imported to your keyring.
Reading Package Lists... Done
Building Dependency Tree... Done
W: Release files for some repositories could not be retrieved or  
authenticated. Such repositories are being ignored.
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.
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Ключи:
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[root@alp ~]# cat /etc/apt/vendors.list.d/*
simple-key "aris" {
    Fingerprint "213520E3EDE04AA556A07FC11ADEDDF9D765EC45";
    Name "<Yuri N. Sedunov (aris)>";
    }

[root@alp apt]# cat vendors.list

simple-key "alt" {
         Fingerprint "BB1DD157A9722953847C5DB25B433A0EEAC91CA0";
         Name "ALT Security Team <security@altlinux.ru>";
}

simple-key "security" {
         Group "alt";
         Fingerprint "62A18AD809AD1DDA342978242913F6A180EF7625";
         Name "ALT Security Team <security@altlinux.org>";
}
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Каки образом фиксить эту проблему?

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С уважением, Александр.