Beier, This may help: http://daily-hacking.blogspot.com/2009/06/nopubkey-during-apt-get-update.html
(Also: It would be a good idea to add this to the wiki.) Regards, Hernan. From: Beier Cai <beier...@gmail.com> To: cassandra-user@incubator.apache.org Date: 03/03/2010 07:26 AM Subject: Error installing Cassandra from package on Ubuntu I'm trying to install Cassandra from package on Ubuntu8.04 based on the info from following page: http://wiki.apache.org/cassandra/DebianPackaging I added the two memtioned sources to /etc/apt/sources.list, did an apt-get update, but got the following error W: GPG error: http://www.apache.org unstable Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY F758CE318D77295D W: You may want to run apt-get update to correct these problems any idea?