see http://ftp.samba.org/pub/samba/samba-pubkey.asc Am I the only person downloading and verifying samba-4.0.3.tar.gz?
The key has been renewed and uploaded to keyservers on 2012-02-26, but I missed to copy the new public key to the ftp server. http://ftp.samba.org/pub/samba/samba-pubkey.asc has been updated. Please accept my apologies. Closing out bug report. Karolin