The following bug has been logged on the website:
Bug reference: 6454
Logged by: Paul Peterson
Email address: the_road@yahoo.com
PostgreSQL version: 9.1.2
Operating system: Windows 7 home=20
Description:=20=20=20=20=20=20=20=20
Latest x64 msi does not recognize admin account. There is only one account,
mine and it appears as though Windows took away the XP admin default
account. suggestions?