Originally Posted by till
The linux distribution makes no difference as the script is the same for all distributions.
I recognize that but, CentOS 5 uses php 5.1.6. I know from experience that some of my php scripts that worked fine with FC3 and php 4.3.9 stopped working when I moved them to CentOS 5. Have you tested the webalizer.php script with php 5.1.6?
I did some debugging yesterday but have not found the answer yet.