The following bug has been logged online:

Bug reference: 1579
Logged by: Byron Zambrano
Email address: bfzambrano (AT) yahoo (DOT) com.mx
PostgreSQL version: 8.0.1
Operating system: Win Xp Service Pack 2
Description: DO NOT CONNECT
Details:

Hello my name is Byron Zambrano I like programming and I use PostgreSQL
8,0,1 for Windows. The operating system from my computer is Win Xp.

PostgreSQL works perfectly if the Win Xp does not have installed Service
Pack, the problem occurs when Win Xp has Service Pack 1 or 2. PostgreSQL
does not activate or doesn´t work and it presents Error.

I would like to know why it happens

Thanks for your collaboration and I expect your answer.

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TIP 7: don't forget to increase your free space map settings

This is most likely the host based firewall preventing connections. You wil=
l need to either disable it, or specifically enable postgresql to listen an=
d communicate on tcp port 5432 (unless you changed the port, of course).

//Magnus

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