BUG #2350: Timezone string fails in a certain context (see below).

The following bug has been logged online:

Bug reference: 2350
Logged by: Gloria W
Email address: strangest@comcast.net
PostgreSQL version: 8.1.2
Operating system: Red Hat 2.6.9-11.ELsmp #1 SMP Fri May 20 18:26:27 EDT
Description: Timezone string fails in a certain context (see below).
Details:

This statement works just fine:

insert into tasks (client_id, task_id, scheduled_time,
scheduled_time_required) values(699,4,('2006-03-20 09:06:00 PST' at time
zone 'US/Eastern'),'2006-03-20 06:00:00');
INSERT 0 1

But this one fails:

lii_hardware=# insert into tasks (client_id, task_id, scheduled_time,
scheduled_time_required) values(699,4,('2006-03-20 09:06:00 US/Pacific' at
time zone 'US/Eastern'),'2006-03-20 06:00:00');
ERROR: invalid input syntax for type timestamp with time zone: "2006-03-20
09:06:00 US/Pacific"

The only difference between the two is the PST timezone string was replaced
with a longer, also correct, timezone string.

Thank you in advance for your help.

Gloria