FC4 hangs on install

To: fedora-list@xxxxxxxxxx
Subject: FC4 hangs on install
From: Todd Cary <todd@xxxxxxxxxxxxxxxxxx>
Date: Sun, 26 Jun 2005 15:54:50 -0700
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I am trying to upgrade a FC 3 server with FC 4. When it gets to "running /sbin/loader", it just hangs.

And suggestions?