apt-get key problem

Aptitude was erroring about a missing key. I had to add the key manually with GPG.

http://bsd.b3ta.org/2007/03/27/apt-get-update-no_pubkey/
http://lists.netisland.net/archives/plug/plug-2007-04/msg00060.html
ex: if key A70DAF536070D3A1
was missing
gpg --keyserver wwwkeys.eu.pgp.net --recv-keys A70DAF536070D3A1
gpg --armor --export A70DAF536070D3A1 | apt-key add -