BUG #3948: date/time functions returning wrong value

The following bug has been logged online:

Bug reference:      3948
Logged by:          Jorge Campins
Email address:      jrcampins@cantv.net
PostgreSQL version: 8.1
Operating system:   Windows XP
Description:        date/time functions returning wrong value
Details:

As you might be aware, recently Venezuela has changed his timezone from GMT
-4 to GMT -4:30. Windows implemented a new timezone for us, "Caracas", to be
used instead of "Caracas/La Paz".

As soon as I changed my computer's timezone to "Caracas", PostgreSQL
date/time functions such as current_timestamp and localtimestamp started to
return a wrong value (I guess they don't recognize the new timezone so they
are returning GMT).

Then I change it to "La Paz", and once again they returned my computer's
time, but of course it has half an hour difference.

I realize this is not really a bug. We will really appreciate your effort to
solve this problem at your earliest convenience.