Problem with freebsd-update on 7.3-RELEASE

[Konstantin Vasilyev]

Hi all!

I have installed
%uname -a
FreeBSD ota2.cellnetrix.com 7.3-RELEASE-p4 FreeBSD 7.3-RELEASE-p4 #3:
Tue Jan 25 19:19:34 MSK 2011
kvasilev at ota2.cellnetrix.com:/usr/obj/usr/src/sys/GENERIC  i386

I have
@daily 		freebsd-update cron
in root's crontab.

Why does freebsd-update mail me the following?

> Looking up update.FreeBSD.org mirrors... 4 mirrors found.
> Fetching metadata signature for 7.3-RELEASE from update4.FreeBSD.org... done.
> Fetching metadata index... done.
> Inspecting system... done.
> Preparing to download files... done.
> 
> The following files are affected by updates, but no changes have
> been downloaded because the files have been modified locally:
> /var/db/mergemaster.mtree
> 
> The following files will be updated as part of updating to 7.3-RELEASE-p4:
> /boot/kernel/kernel
> /boot/kernel/kernel.symbols
> /boot/kernel/nfsclient.ko
> /boot/kernel/nfsclient.ko.symbols
> /usr/lib/libbz2.a
> /usr/lib/libbz2_p.a
> /usr/lib/libopie.a
> /usr/lib/libopie_p.a
> /usr/lib/libssl.a
> /usr/lib/libssl_p.a
> /usr/lib/libstand.a
> /usr/share/man/man2/mount.2.gz
> /usr/share/man/man2/nmount.2.gz
> /usr/share/man/man2/unmount.2.gz
> /usr/src/contrib/opie/libopie/readrec.c
> /usr/src/lib/libc/sys/mount.2
> /usr/src/sys/conf/newvers.sh
> /usr/src/sys/kern/uipc_mbuf.c
> /usr/src/sys/nfsclient/nfs_vfsops.c

Who can give me ideas what's happening?

--
With best regards,
Konstantin Vasilyev