plperl db crash

I had a db lock up on one of our machines.
To reproduce it, I did a fresh install on a testing machine.

On the other machine where it occured the first time the db just hung,
but it didn't crash. I tried to /etc/init.d/postgresql stop
But it didn't stop.

Then I did pg_ctl -m immediate stop
The log said something like 'redo is not required', so i gues everything
should be fine.

However, like already said, I did a fresh install on a testing machine
and there it crashes:

------------------------------------------------------------------------
debian/unstable
postgresql 7.3.4

/usr/lib/postgresql/bin/createlang plperl plasma
psql plasma

CREATE FUNCTION perlsub(text, text, text) RETURNS text AS '
my ($data, $pat, $repl) = $_;
$data =~ s/$pat/$repl/;
return $data
' LANGUAGE 'plperl';

-- Taken from here:
-- http://archives.postgresql.org/pgsql-general/2001-02/msg00798.php

plasma=# SELECT perlsub('abc','b','123');
server closed the connection unexpectedly
This probably means the server terminated abnormally
before or while processing the request.
The connection to the server was lost. Attempting reset: Failed.
!#

---------------------------------------------------------------
Oct 2 19:15:00 billy postgres[23521]: [7] LOG: connection received:
host=[local]
Oct 2 19:15:00 billy postgres[23521]: [8] LOG: connection authorized:
user=plasma database=plasma
Oct 2 19:15:02 billy postgres[23329]: [7] LOG: server process (pid
23521) was terminated by signal 11
Oct 2 19:15:02 billy postgres[23329]: [8] LOG: terminating any other
active server processes
Oct 2 19:15:02 billy postgres[23329]: [9] LOG: all server processes
terminated; reinitializing shared memory and semaphores
Oct 2 19:15:02 billy postgres[23523]: [10] LOG: database system was
interrupted at 2003-10-02 19:13:01 CEST
Oct 2 19:15:02 billy postgres[23523]: [11] LOG: checkpoint record is
at 0/83238C
Oct 2 19:15:02 billy postgres[23523]: [12] LOG: redo record is at
0/83238C; undo record is at 0/0; shutdown TRUE
Oct 2 19:15:02 billy postgres[23523]: [13] LOG: next transaction id:
513; next oid: 25168
Oct 2 19:15:02 billy postgres[23523]: [14] LOG: database system was
not properly shut down; automatic recovery in progress
Oct 2 19:15:02 billy postgres[23523]: [15] LOG: ReadRecord: record
with zero length at 0/8323CC
Oct 2 19:15:02 billy postgres[23523]: [16] LOG: redo is not required
Oct 2 19:15:02 billy postgres[23524]: [10] LOG: connection received:
host=[local]
Oct 2 19:15:02 billy postgres[23524]: [11] FATAL: The database system
is starting up
Oct 2 19:15:04 billy postgres[23523]: [17] LOG: database system is ready

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