Description of problem:
The part of loader that parses the kickstart for commands will continue parsing
throughout the %pre/%post/%package sections until one of them doesn't have any
options. This is because in ksReadCommands it strips leading and trailing
whitespace but then checks for the *exact* strings, not just initial substrings.

Version-Release number of selected component (if applicable):
anaconda-9.1.6.8-1.RHEL

How reproducible:
Always

Steps to Reproduce:
1. Put a python script as a %pre right after the commands section of ks.cfg 
2. make sure you assign to a variable called 'url' in the python script
3.
  
Actual results:
A customer claimed they got a newt error dialog, I just got a hung loader

Expected results:
No problems

Additional info:

An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on the solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.

http://rhn.redhat.com/errata/RHEA-2006-0150.html