I'm running
UBB.threads on my site with PHP 4.2.1. It works just fine. I may depend a lot though on what ./configure statements you set when you compiled the program on your server.
Can you post your ./configure statement here so I can compare it to mine? If you're not sure how to do that, create a file called
phpinfo.php with the following in it:
code:
<?
phpinfo()
?>
Then, call that file from your browser. The ./configure statement will be at the top.