[CentOS] centos 6 - 1 of 2 machines starts and not the other

fakessh @ wrote:
> hu guys
>
> I regularly read this list I can usually find me in the excellent
> documentation apache.
> I'm in front of a very strange problem I possess two desktop machines
> which works with the Apache server with centos 6
>
> 1 of 2 machines starts and not the other.
>
> I use the apache config file here that provides standard distribution
>
What's in /var/log/httpd/error_log on the machine where it doesn't start?
And is selinux enforcing?

       mark