premessa: sono niubbissimo

allora.. ho su firefox 1.0 su fedora 3 e volevo aggiornarlo a 1.03, per cui ho provato a fare questo: (come letto in una guida on-line)

[root@localhost daniele]# yum update
You have enabled checking of packages via GPG keys. This is a good thing.
However, you do not have any GPG public keys installed. You need to download
the keys for packages you wish to install and install them.
You can do that by running the command:
rpm --import public.gpg.key
For more information contact your distribution or package provider.
[root@localhost daniele]# rpm --import public.gpc.key
error: public.gpc.key: import read failed.
quale è il problema?