Err ftp://ftp.de.debian.org testing Release

[Alexander Sieck <alexander.sieck@web.de>]

Hello,

after using
# deb ftp://ftp.de.debian.org/debian-amd64/debian/ testing main contrib

for quite some time, I now changed my /etc/apt/sources.list to

deb ftp://ftp.de.debian.org/debian/ testing main contrib
deb-src ftp://ftp.de.debian.org/debian/ testing main contrib

'aptitude update' reports an error w.r.t. the Release file:

# BEGIN-CLI
deb64a:~# date
Tue May 30 22:00:54 CEST 2006
deb64a:~# aptitude update
Reading package lists... Done
Building dependency tree... Done
Reading extended state information      
Initializing package states... Done
Reading task descriptions... Done  
Building tag database... Done    
Get:1 ftp://ftp.de.debian.org testing Release.gpg [189B]
Hit ftp://ftp.de.debian.org testing Release
Err ftp://ftp.de.debian.org testing Release
  
Get:2 ftp://ftp.de.debian.org testing Release [35.4kB]
Ign ftp://ftp.de.debian.org testing Release
Hit ftp://ftp.de.debian.org testing/main Packages
Hit ftp://ftp.de.debian.org testing/contrib Packages
Hit ftp://ftp.de.debian.org testing/main Sources
Hit ftp://ftp.de.debian.org testing/contrib Sources
Fetched 35.6kB in 1s (18.5kB/s)
Reading package lists... Done
W: GPG error: ftp://ftp.de.debian.org testing Release: The following
signatures couldn't be verified because the public key is not
available: NO_PUBKEY 010908312D230C5F
W: You may want to run apt-get update to correct these problems

deb64a:~# aptitude --version
aptitude 0.4.1 compiled at Dec 10 2005 00:24:54
Compiler: g++ 4.0.3 20051201 (prerelease) (Debian 4.0.2-5)

NCurses version: 5.5
libsigc++ version: 2.0.16

deb64a:~# cat /proc/version 
Linux version 2.6.15 () (sieck@deb64a) (gcc version 4.0.3 (Debian
4.0.3-1)) #1 Sun May 7 21:44:15 CEST 2006
deb64a:~# uname -a
Linux deb64a 2.6.15 #1 Sun May 7 21:44:15 CEST 2006 x86_64 GNU/Linux

deb64a:~# gpg --version
gpg (GnuPG) 1.4.3
Copyright (C) 2006 Free Software Foundation, Inc.
This program comes with ABSOLUTELY NO WARRANTY.
This is free software, and you are welcome to redistribute it
under certain conditions. See the file COPYING for details.

Home: ~/.gnupg
Supported algorithms:
Pubkey: RSA, RSA-E, RSA-S, ELG-E, DSA
Cipher: 3DES, CAST5, BLOWFISH, AES, AES192, AES256, TWOFISH
Hash: MD5, SHA1, RIPEMD160, SHA256, SHA384, SHA512
Compression: Uncompressed, ZIP, ZLIB, BZIP2

# END-CLI

Both files, Release and Release.gpg, are available on
ftp://ftp.de.debian.org/debian/dists/testing
Release         35 KB   05/29/2006    08:40:00 PM
Release.gpg      1 KB   05/29/2006    08:40:00 PM

I wonder if the error is on my system or on the mirror.
ftp://ftp.at.debian.org/debian/ behaves the same.

Alexander