Why a subkey?

[Mike - EMAIL IGNORED]

On Sat, 24 Feb 2007 12:42:09 -0600, Robert J. Hansen wrote:

> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA256
> 
>> On FC4 with gpg 1.4.1:
> 
> Please upgrade.  There have been a couple of security updates since  
> 1.4.1.
> 
[...]

Following your advice, I ran:
   yum update gnupg
a few days ago, and now I have v1.4.5 . But I
see that you have v1.4.6 .  I ran yum again,
and it got nothing new.  So what's happening?

Thanks,
Mike.