server closed the connection unexpectedly

Hi all,

Errors running a psql batch that has worked for weeks without a
problem:
$ uname -a
Linux s1 2.6.6-1.435.2.3 #1 Thu Jul 1 08:25:29 EDT 2004 i686 athlon
i386 GNU/Linux
$ rpm -q postgresql
postgresql-7.4.2-1
$ psql KakaoStats
Bem-vindo ao psql 7.4.2, o terminal iterativo do PostgreSQL.

select insert_usuarios_producao();
psql:/KakaoStats/scripts/sql/kakaoStats.sql:92: server closed the
connection unexpectedly
This probably means the server terminated abnormally
before or while processing the request.
psql:/KakaoStats/scripts/sql/kakaoStats.sql:92: connection to server
was lost

select deleta_antigos()
server closed the connection unexpectedly
This probably means the server terminated abnormally
before or while processing the request.

vacuum KakaoStats
psql: FATAL: the database system is starting up

These commands are some of the last of a script which runs normaly
until then.

Regards
Clodoaldo Pinto

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