BUG #3341: Reinstallation error

The following bug has been logged online:

Bug reference:      3341
Logged by:          Laurent Hinault
Email address:      lhino86@yahoo.fr
PostgreSQL version: 8.2.4
Operating system:   Windows XP Pro
Description:        Reinstallation error
Details: 

I installed PostgreSQL about 2 months ago, then unsinstalled it. Now I want
to install it again, but when I do, on the screen where I am supposed to
create the account (postgres by default), I get a message error saying that
the account is currently locked. If I enter a password (which I don't
normally do in order to let the system made a one for me), it tells me the
password is wrong.