Hi, get the key 010908312D230C5F from a keyserver with gpg --recv-keys 010908312D230C5F and import it with apt-key add. So use the following command: gpg --recv-keys 010908312D230C5F sks.keyserver.penguin.de | apt-key add - Replace the keyserver with a more suitable server inside the U.S. And after that you shouldn't bother anymore with missing keys. Kind regards, Marko Kaiser