[neoCrimeLabs]

apt package manager uses short-ids with a repository key is not recognised, as well as when you use apt-key to add the key to your keychain.

When using 3rd party repositories, you will often see something like the following, which also uses short-ids:

> apt-key adv --keyserver keyserver.ubuntu.com --recv 7F0CEB10

So it makes me wonder if any commonly used repositories (or PPA's) have fake duplicate keys with the same key-id.