W: GPG error: http://apt.freegeek.org precise Release: The following signatures were invalid: KEYEXPIRED 1422819173
W: Duplicate sources.list entry http://apt.freegeek.org/ubuntu/ precise/main i386 Packages (/var/lib/apt/lists/apt.freegeek.org_ubuntu_dists_precise_main_binary-i386_Packages)

gpg: key "1422819173" not found: eof
gpg: 1422819173: delete key failed: eof

W: GPG error: http://apt.freegeek.org precise InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 0261FE3D0875A635

sudo gpg --keyserver pgpkeys.mit.edu --recv-key 0261FE3D0875A635

sudo gpg -a --export-keys 0261FE3D0875A635 | sudo apt-key add -

W: GPG error: http://apt.freegeek.org precise InRelease: The following signatures were invalid: KEYEXPIRED 1422819173

gpg --list-keys
/root/.gnupg/pubring.gpg
------------------------
pub   4096R/0875A635 2009-07-13 [expired: 2015-02-01]
uid                  Freegeek Portland Packages (archive signing only) <ass@freegeek.org>

#deb http://apt.freegeek.org/ubuntu precise main