problem with ssi and firefox

[physio]

Heya guys,

I really have a problem with this - take a look at this page please
http://www.xxx-adult-free.com/Amateur/

In IE all the links are displayed fine, but in firefox after a certain amount the links just stop and you only see blank lines...

I do include the links like this here
<!--#include file="Porn-List/index.shtml" -->
I also tried it with the virtual thing, no difference....

Any idea what might cause this? With the growing amount of people using firefox this really starts to concern me...