Strange messages when booting freebsd 7.0-beta4

[vittorio]

I recently upgraded from 6.2 to 7.0-beta4
Now, in /var/log/messages I invariably find the following messages:
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Copyright (c) 1992-2007 The FreeBSD Project.
Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
The Regents of the University of California. All rights reserved.
FreeBSD is a registered trademark of The FreeBSD Foundation.
FreeBSD 7.0-BETA4 #0: Thu Dec 27 22:18:53 CET 2007
root at hpbsd.vic:/usr/obj/usr/src/sys/HP03
module_register: module pci/ichss_pci already exists!
Module pci/ichss_pci failed to register: 17
module_register: module cpu/ichss already exists!
Module cpu/ichss failed to register: 17
module_register: module cpu/est already exists!
Module cpu/est failed to register: 17
module_register: module cpu/p4tcc already exists!
Module cpu/p4tcc failed to register: 17
module_register: module cpu/powernow already exists!
Module cpu/powernow failed to register: 17
module_register: module cpu/smist already exists!
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What should I modify to avoid them?

Ciao
Vittorio