BUG #3390: initdb fails on install

The following bug has been logged online:

Bug reference: 3390
Logged by: Alvaro
Email address: alvaroag(at)gmail(dot)com
PostgreSQL version: 8.2.4
Operating system: Windows Server 2003 R2 Enterprise x64
Description: initdb fails on install
Details:

I'm trying to install postgres using the MSI Installer. Everything goes
normal until it starts to initialize the database(intdb). It shows this
message:

"
Failed to run initdb: 1!
Please see the logfile in 'C:\Program Files
(x86)\PostgreSQL\8.2\tmp\initdb.log'.
Note! You must read/copy this logfile before you click OK, or it will be
automatically removed.
"

And then it rolls back the setup.

When I check the logfile, it says:

"
The files belonging to this database system will be owned by user
"postgres".
This user must also own the server process.

The database cluster will be initialized with locale C.

fixing permissions on existing directory C:/Program Files
(x86)/PostgreSQL/8.2/data ... ok
creating subdirectories ... initdb: could not create directory "C:/Program
Files (x86)": File exists
initdb: removing contents of data directory "C:/Program Files
(x86)/PostgreSQL/8.2/data"
"

I can also send the installation log. if someone tells me where to send it.

Thanks,
Alvaro