Originally Posted by merlin1991

Actually when you look at the warning

Code:

W: GPG error: https://downloads.maemo.nokia.com ./ Release: The following signatures were invalid: KEYEXPIRED 1349249546 KEYEXPIRED 1349249546 KEYEXPIRED 1349249546
W: GPG error: https://downloads.maemo.nokia.com ./ Release: The following signatures were invalid: KEYEXPIRED 1349249546 KEYEXPIRED 1349249546 KEYEXPIRED 1349249546
W: GPG error: https://downloads.maemo.nokia.com ./ Release: The following signatures were invalid: KEYEXPIRED 1349249546 KEYEXPIRED 1349249546 KEYEXPIRED 1349249546
W: You may want to run apt-get update to correct these problems

you'll realize, that it is not an unauthorized key, but rather an expired key (on the nokia repos), the repos on my server (if signed, not all are) are signed by a key which is added to apt-key by the newest community-ssu-enabler, thus residing in the "thrusted zone"

never give answers without checking the logs