I'm using the latest installer from your website (postgresql-8.4.2-1-windows.exe). After entering the port postgres should run on, it crashes. I've tried different installation directories and using a different port, but the problem persists.
Here's the crash data:
Problem signature:
Problem Event Name: APPCRASH
Application Name: postgresql-8.4.2-1-windows.exe
Application Version: 1.0.0.0
Application Timestamp: 485258df
Fault Module Name: postgresql-8.4.2-1-windows.exe
Fault Module Version: 1.0.0.0
Fault Module Timestamp: 485258df
Exception Code: c0000005
Exception Offset: 0004df8b
OS Version: 6.1.7600.2.0.0.256.1
Locale ID: 1035
Additional Information 1: 0a9e
Additional Information 2: 0a9e372d3b4ad19135b953a78882e789
Additional Information 3: 0a9e
Additional Information 4: 0a9e372d3b4ad19135b953a78882e789
I've had a previous installation on this computer, but I've removed the old postgres user and data directory contents.