The following bug has been logged online:

Bug reference: 2021
Logged by: pritesh
Email address: prits_jips (AT) yahoo (DOT) com
PostgreSQL version: 8.0.4
Operating system: Windows XP
Description: Now able to download Postgresql 8.0.4
Details:

Hello
To whomsoever it may concern I just want to let you know that I am not able
to download postgresql 8.0.4 for windows from your ftp sire and bittorent
site. So please provide me another site from where I can download it.
Thank you
Pritesh Patel

---------------------------(end of broadcast)---------------------------
TIP 9: In versions below 8.0, the planner will ignore your desire to
choose an index scan if your joining column's datatypes do not
match