Fatal "make check" bug with 8.0 beta 3 under Mac OS 10.3

I just downloaded and compiled PostgreSQL 8.0 beta 3.  The directory and
files are all owned by the "postgres" user, and I compiled as that
user.  I configured with:

./configure --prefix=/sw  --with-tcl --with-python --with-libs=/sw/lib/
--with-includes=/sw/include/

(/sw is the root of the "fink" hierarchy, analogous in some ways to the
traditional /usr/local path.)

The "make check" log included the following:

creating template1 database in
/Users/reuven/Downloads/postgresql-8.0.0beta3/src
/test/regress/./tmp_check/data/base/1 ... FATAL:  could not create
shared memory
 segment: Cannot allocate memory
DETAIL:  Failed system call was shmget(key=2, size=1163264, 03600).
HINT:  This error usually means that PostgreSQL's request for a shared
memory se
gment exceeded available memory or swap space. To reduce the request
size (curre
ntly 1163264 bytes), reduce PostgreSQL's shared_buffers parameter
(currently 50)
 and/or its max_connections parameter (currently 10).
        The PostgreSQL documentation contains more information about
shared memo
ry configuration.
child process exited with exit code 1
initdb: failed
initdb: data directory
"/Users/reuven/Downloads/postgresql-8.0.0beta3/src/test/r
egress/./tmp_check/data" not removed at user's request

Reuven