What cvs-supfile Directive did I Leave Out?

[Martin McCormick]

	I originally wanted to bring the ISO image of FreeBSD6.2
up to date using cvsup.  Everything worked perfectly including
the make buildworld, make installworld, make buildkernel and make
installkernel.  Then was when I realized that I was now running
FreeBSD7.0 after having unwittingly upgraded.

	This particular system will be a very busy dhcpd server,
however, so I probably don't want the bleeding edge.  It is a
Dell 2650 and FreeBSD6.2 was the only ISO image of FreeBSD that
found all the right drivers.  I probably need to go back to what
I initially meant to do for safety sake.

	Since this was my first successful attempt at using
cvsup, my questions now are:

Can I safely downgrade back to the most stable version of 6.2
using cvsup?

What did I do wrong in the cvs-supfile I used?  upgrades are
great if you want them, but this is going to be a production
system so I would rather try the latest and greatest on a
less-important box.
All I wanted was sources, no ports or X; basically what you would
have after using an ISO image.  Thanks.
The cvs-sup file follows:

*default tag=.
*default host=cvsup15.us.freebsd.org
*default prefix=/usr
*default base=/var/db
*default release=cvs delete use-rel-suffix
src-all

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Martin McCormick WB5AGZ  Stillwater, OK 
Systems Engineer
OSU Information Technology Department Network Operations Group