BUG #4400: initdb doesn't work with partition D:

The following bug has been logged online:

Bug reference:      4400
Logged by:          Jan-Peter Seifert
Email address:      Jan-Peter.Seifert@gmx.de
PostgreSQL version: 8.3.3
Operating system:   Windows xp Professional
Description:        initdb doesn't work with partition D:
Details:

Hello,

whenever I try to run initdb on a directory on partition "D:" with the
parameter "-D" I get the error that a "file exists". I create a directory,
give full rights for the user postgres and then run initdb on it. On
partition E: it works. Both are NTFS. I have no programs open that might
access the directories ...

Strange.