I see you're using Apache 1.3, good thing you noticed because we have been developing for Apache 2.x.
If the above fix does not work, the easiest way to get it up and running would be to upgrade Apache (if your hosting allows this).
But to get this bug fixed for 1.3 I'll try and reproduce it in a VM.
We should be able to give you and update on that tomorrow.
Please note though that Apache 2.0 was released in 2002. The majority of server distributions upgraded to version 2.x around 2007. Apache 1.3 reached "End of life" status with version 1.3.42 in 2010. Therefore Apache 1.3 won't officially be supported by Mokuji.
FreeBSD 6.4 provides an official update to Apache 2.2.9 (called the httpd package).
We recommend that you send a friendly suggestion to your hosting provider to upgrade their software, just to remind them that their software hasn't seen any new features in 11 years.
I hope this solves your problem and you're enjoying Mokuji :]