BUG #2548: Fatal error with timezone

The following bug has been logged online:

Bug reference:      2548
Logged by:          Ricardo Solanilla
Email address:      abasoft@ciudad.com.ar
PostgreSQL version: 8.0.3
Operating system:   Windows XP Pro
Description:        Fatal error with timezone
Details:

my log show this error, the server stop and never more i could start it, and
reinstall didn't work. (i lost all my databases)

2006-07-21 12:04:10 LOG:  unrecognized time zone name:
"America/Buenos_Aires"
2006-07-21 12:04:10 FATAL:  invalid value for parameter "TimeZone":
"America/Buenos_Aires"

(no human touch the windows configuration or regional)