Error en initdb

Hola lista,
Por favor si nos podrian ayudar a descifrar este mensaje
de error al ejecutar el comando initdb -D $PGDATA:
...
[postgres(at)skywalker SWS]$ $PGHOME/bin/initdb -D $PGHOME/data
The files belonging to this database system will be owned by user
"postgres".
This user must also own the server process.

The database cluster will be initialized with locale en_US.UTF-8.
The default database encoding has accordingly been set to UTF8.

fixing permissions on existing directory /opt/pgtests/postgresSWS/data ...
ok
creating directory /opt/pgtests/postgresSWS/data/global ... ok
creating directory /opt/pgtests/postgresSWS/data/pg_xlog ... ok
creating directory /opt/pgtests/postgresSWS/data/pg_xlog/archive_status
... ok
creating directory /opt/pgtests/postgresSWS/data/pg_clog ... ok
creating directory /opt/pgtests/postgresSWS/data/pg_subtrans ... ok
creating directory /opt/pgtests/postgresSWS/data/pg_twophase ... ok
creating directory /opt/pgtests/postgresSWS/data/pg_multixact/members ...
ok
creating directory /opt/pgtests/postgresSWS/data/pg_multixact/offsets ...
ok
creating directory /opt/pgtests/postgresSWS/data/base ... ok
creating directory /opt/pgtests/postgresSWS/data/base/1 ... ok
creating directory /opt/pgtests/postgresSWS/data/pg_tblspc ... ok
selecting default max_connections ... 100
selecting default shared_buffers ... 1000
creating configuration files ... ok
creating template1 database in /opt/pgtests/postgresSWS/data/base/1 ... ok
initializing pg_authid ... ok
enabling unlimited row size for system tables ... ok
******** ESTE ES EL ERROR
initializing dependencies ... sh: line 1: 17791 Segmentation fault
"/opt/pgtests/postgresSWS/bin/postgres" -F -O -c search_path=pg_catalog -c
exit_on_error=true template1 >/dev/null
child process exited with exit code 139
*******
initdb: removing contents of data directory
"/opt/pgtests/postgresSWS/data"

Si nos pudieran ayudar con esto seria genial,

Muchas gracias
Carmen y Vanessa.