set no password in a fedora user

[jdow]

From: "Tarjei Knapstad" <tarjeik at chemcon.no>
> 
> The most common way of rooting a box is to first gain access to an
> unprivileged user account, installing a rootkit and then gaining root
> access through some unpatched exploit.

That is EXACTLY how the Debian and Gentoo machines were invaded recently.

{^_^}