How did you solve this particular error i am having the same error on a 7.0 release and have not been able to fix it.
Thanks
ok,
when i try to start postgresql i get;
[root@fileserver postgres_7.4.2]# /etc/init.d/postgresql start
An old version of the database format was found.\nYou need to upgrade the data format before using PostgreSQL.\nSee (Your System's documentation directory)/postgresql-7.4/README.rpm-dist for more information.