The following bug has been logged online:

Bug reference: 1968
Logged by: Jorge Mario Valencia
Email address: vamajor (AT) gmail (DOT) com
PostgreSQL version: 8.0.4
Operating system: Windows
Description: bad end of file
Details:

When i download the file, this one cannot be unziped and i download it
again, and never could be opened, may be that the file on the mirror is
corrupted, i'm downloading this from Colombia, thanks for your help!!

---------------------------(end of broadcast)---------------------------
TIP 6: explain analyze is your friend