Arley, lo tuyo no es un bug sino un problema de rendimiento. Deberias
reportarlo a una lista de correo que podria ser pgsql-performance (pero
tendira que ser en ingles) o pgsql-es-ayuda. Tambien podrias preguntar
en el canal de IRC #postgresql-es en irc.freenode.net.
--
Alvaro Herrera http://www.advogato.org/person/alvherre
"After a quick R of TFM, all I can say is HOLY CR** THAT IS COOL! PostgreSQL was
amazing when I first started using it at 7.2, and I'm continually astounded by
learning new features and techniques made available by the continuing work of
the development team."
Berend Tober, http://archives.postgresql.org/pgsql-hackers/2007-08/msg01009.php