Try "-B 1000" for the shared buffer size. This will eat 8 MB on your system and is reasonable for a test site. For a production site you'd probably use a much larger value, since even homeless folks in Portland can afford 1 GB RAM these days (I'm not kidding, I know a guy who lives in the back of a pick-up truck who was a beta tester for MAC Darwin).
We need to update this information for our install documentation because
many of the parameters can be set much more nicely in a control file as of PG 7.1.
