Apt-get issues
From FreekiWiki
Miscellaneous issues with apt-get
No public key
- open terminal
- su
- password
gpg --keyserver wwwkeys.eu.pgp.net --recv-keys <key> gpg --armor --export <key> | sudo apt-key add - apt-get update
NOTE: while the may fix the issue, it is a big security risk. you need to verify somehow that the key is actually from an organization you trust. without that, it defeats the whole purpose of gpg-signed archives.

