Description of Problem:
The command, "/usr/bin/passwd -d" in the %post section of kickstart does 
not work.

Examination of STDOUT/STDERR of the kickstart %post contains the msg: 

delete password for root   <--produced by an "echo" immediately preceding 
Changing password for user root
Removing password for user root
passwd: Success

But, upon reboot of the system, the password specified by the "rootpw" 
line in the kickstart file is still in effect.

How Reproducible:
Floppy-based kickstart install

Actual Results:
Password specified by kickstart "rootpw" line is still in effect.

Expected Results:
No password for root.