BUG #1868: Initdb error during silent install on windows 2000

The following bug has been logged online:

Bug reference: 1868
Logged by: Karim Mardhani
Email address: karim(at)zeecore(dot)net
PostgreSQL version: 8.0.1
Operating system: Windows 2000 service pack 4
Description: Initdb error during silent install on windows 2000
Details:

I am getting following error from initdb during silent installation of
8.0.1:

creating directory C:/Program Files/PostgreSQL/8.0/data/global ... initdb:
could not create directory "C:/Program Files": File exists

I have searched about this issue and usually this happens due to a
permission problem. I have checked the permission they look fine to me.
Also I have used same install on at least 15 other PCs (Mix of win 2K and
win xp) and it worked fine for each one except this one. Any ideas what
might be the problem? Following are the permissions on this PC (BTW other
PCs have exactly same permissions and install works without any problem):

C:\: Everyone => Allow FullControl, No Deny
C:\Program Files: Group User => Allow Read &Execute, List Folder Content,
Read. No Deny

The user postgres is member of group Users.

One update on this problem.

I updated my install script to create a directory "md C:\pgdata" and update
the command line for postgresql install to include "DATADIR=C:\pgdata" and
everything works fine.

Maybe the space in "Program Files" is causing this problem? But then again
the installation worked fine for at least 15 other PCs where the data base
data was in C:\Program Files.

Don't know what's going on here.