Cannot restart the postmaster

I've upgraded from 7.1.3 to 7.2, and I've tried to restart the postmaster
using (as root), /etc/rc.d/init.d/postgresql restart. However, this is what
I see:

$An old version of the database format was found.\nYou need to upgrade the
data format before using PostgreSQL.\nSee
/usr/doc/postgresql-7.2/README.rpm-dist for more information.

I have no data in template1, and according to the README.rpm-dist,
restarting the postmaster (and I did a separate 'stop' and 'start', too)
should upgrade the database format. T'ain't workin' here.

Please send suggestions as I'm on a roll now with my accounting package
and I want to continue working on it.

Many thanks,

Rich

Dr. Richard B. Shepard, President

Applied Ecosystem Services, Inc. (TM)
2404 SW 22nd Street | Troutdale, OR 97060-1247 | U.S.A.
+ 1 503-667-4517 (voice) | + 1 503-667-8863 (fax) | rshepard(at)appl-ecosys(dot)com
http://www.appl-ecosys.com