I try again using apache2, and the password hashing problem amazingly "gone" and I don't know what have I done that made the problem  solved.. :( (previously I have a password hashing problem)

Then,  I wrote a line on the bottom of httpd.conf:

    Include /etc/koha-httpd.conf

and

    perl -I/usr/local/koha/intranet/scripts/misc/fines2.pl

on crontab file, and added

    Listen 8080

on the ports.conf

Then I run my firefox browser, and write http://yps-013:8080/ --my hostname is yps-013-- click "Go", and I got the old same apache2 page... :(

With little desperate, I try http://localhost:8080/ and I got a Koha welcome... :)
then I got a 500 Internal Server Error... :(
(http://localhost:80/ give same result)

----------------------------------------------------------------------------------------------
Internal Server Error
The server encountered an internal error or misconfiguration and was unable to complete your request.
Please contact the server administrator, koha@lists.katipo.co.nz and inform them of the time the error occurred, and anything you might have done that may have caused the error.
More information about this error may be available in the server error log.
---------------------------------------------------------------------------------------------

What has happen?
Do I made mistake when I edit the httpd.conf and crontab file?

Please tell me what should I do to solve:

1. the confusion of "localhost" and hostname, because when I use http://yps-013:8080 the page comes up is the default apache2 page, and when I use http://localhost:8080/ I got a koha welcome message and the problem number 2. I check the koha-httpd.conf, the servername and virtual host is still yps-013.
 
2. the 500 Internal Server Error

I also attach the error logs generated by apache2 and koha.

Thanks.

Best Regards,
Wahyu W. H.