pgsql 7.1.2 server hanging...

I am trying out postgresql 7.1.2. I'm experiencing a hung server on
linux 2.4.2-2 when I run a sql script that drops & reloads many PL/pgSQL
functions and triggers, as well as hanging during VACUUM ANALYZE. That
last thing I see in the logs is as follows:

2001-06-25 17:35:19 [3718] DEBUG: query: DROP TRIGGER
person_insert_trigger ON person;
2001-06-25 17:35:19 [3718] DEBUG: ProcessUtility: DROP TRIGGER
person_insert_trigger ON person;
2001-06-25 17:35:38 [3719] DEBUG: MoveOfflineLogs: remove
0000000000000008

During VACUUM ANALYZE the last log messages are:

2001-06-25 18:14:15 [3866] DEBUG: --Relation pg_toast_16600--
2001-06-25 18:14:15 [3866] DEBUG: Pages 4: Changed 2, reaped 0, Empty
0, New 0; Tup 14: Vac 0, Keep/VTL 12/0, Crash 0, UnUsed 0, MinLen 1203,
MaxLen 1901; Re-using: Free/Avail. Space 0/0; EndEmpty/Avail. Pages 0/0.
CPU 0.00s/0.00u sec.
2001-06-25 18:14:15 [3866] DEBUG: Index pg_toast_16600_idx: Pages 2;
Tuples 14. CPU 0.00s/0.00u sec.

Any clues or helpful diagnostic questions?

Regards,
Ed Loehr

% cat /usr/local/pgsql/data/postmaster.opts
/usr/local/postgresql-7.1.2/bin/postmaster '-i' '-p' '5432' '-B' '1024'
'-N' '20' '-o' '-F -S 4096'