Re: [Trisquel-users] Untrusted Packages prompt

[dguthrie]

It happens when signatures cannot be authenticated for download packages. For  
me, the following usually dies the trick:sudo apt-get clean && sudo apt-get  
update Basically it just deletes cached packages, and updates. Then run
sudo apt-get upgrade to upgrade, or just wait until it prompts you  
graphically. You can do the equivalent in the synaptic package manager too.