which yum repos are safe to mix in FC4?

To: Fedora List <fedora-list@xxxxxxxxxx>
Subject: which yum repos are safe to mix in FC4?
From: "Robert P. J. Day" <rpjday@xxxxxxxxxxxxxx>
Date: Thu, 16 Jun 2005 19:00:23 -0400 (EDT)
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  are there any new developments in terms of which yum repos are
mixable in FC4?  or are there still some non-recommended combinations?

rday