Error in Installation 8.0RC1 on Windows XP

Hi,

A colleague reported getting this error while installing 8.0.0.rc-1 on a WinXP system.

"Failed to set permissions on the installed files. Please see the logfile in "C:\Program
Files\PostgreSQL\8.0.0.rc1\tmp\pgperm.log"

The logfile(pgperm.log) contents:
"No mapping between account names and security IDs was done."

Any clues as to how to fix this particular problem?

Thanks & Regards,
Mehul