W: GPG error: http://ubuntu.beryl-project.org edgy Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 3FF0DB166A7476EA
E: Could not get lock /var/lib/dpkg/lock - open (11 Resource temporarily unavailable)
E: Unable to lock the administration directory (/var/lib/dpkg/), is another process using it?