> > I had it configured correctly to use the new key. However, since it wasn't > the primary key for the box, it wasn't transmitted for authentication. I > just changed my aur profile key to the primary key and it worked without > having to mess with the agent nonsense.
Might not be a good idea to use your primary key for AUR. You should leave yourself the flexibility to selectively revoke. Easy to do in ~/.ssh/config. See https://wiki.archlinux.org/index.php/Arch_User_Repository#Submitting_packages
