Well, I finally decided to play around with 7.1. Here's the problem:
When I try to run pg_dump I get a segmentation fault. This only seems to
happen if the PGDATABASE environment variable is set and I don't supply
the database name on the command line. If I unset PGDATABASE, I get a
normal error. Or if I supply the database name on the command line, it
works fine.
Known problem? (It works fine in 7.0.2)
-Cedar