Get:4 http://ftp.de.debian.org etch Release [74.4kB]
Ign http://ftp.de.debian.org etch Release
Hit http://ftp.de.debian.org etch/main Packages/DiffIndex
Hit http://ftp.de.debian.org etch/main Sources/DiffIndex
Fetched 99.1kB in 5s (19.2kB/s)
Reading package lists... Done
W: GPG error: http://security.debian.org etch/updates Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY A70DAF536070D3A1
W: GPG error: http://ftp.de.debian.org etch Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY A70DAF536070D3A1
W: You may want to run apt-get update to correct these problems