I have a fresh install of Ubuntu 12.04. Whenever I try to download a new app from the Ubuntu Software Center, it says:
Requires unauthenticated packages
It then gives me an option to "Repair". When I click on "Repair", it starts "Updating cache" with the progress bar stuck at zero.
If I try download or install any package via terminal, it gets stuck at
connecting to archive.ubuntu.com
and I end up with the
something wicked happened...
I've tried changing the server from 'Software Sources' as mentioned in the troubleshooter. But that doesn't help and the problem persists.