postmaster does not shut down

I'm running PostgreSQL 7.4 on Mac OS X server 10.3.3.  When I try
pg_ctl stop as the postgres user, it times out waiting for postmaster
to shut down, gives a failed error, then: pg_ctl: postmaster does not
shut down

The only thing I'm able to do is kill -9 <pid> then rm the pid file.
This is not very good.  Anyone know what would keep postmaster from
shutting down?

Thanks,
Jeff Deroshia


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Jeff Deroshia
Network Services Specialist
Department of Physics and Astronomy
The University of Georgia
706-542-3622
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