Trouble with PHP XMLRPC on Solaris

I'm trying to get some xmlrpc connectivity working through PHP. Current configuration is Apache 1.3.22/PHP 4.2.0 on Solaris 7. I've linked to the current expat libraries. Configure and compile don't show any problems and other PHP scripts (including phpinfo) work fine. The problem is that an xmlrpc call to the Solaris host invariably returns a "Method not found" error message. The same xmlrpc server code works flawlessly on a Linux system similarly configured (Apache 1.3.24/PHP 4.2) with the same requests. The only thing I can find is that libxml.so is not installed on the Solaris system, but my understanding is that that is a gnome specific library and I'm not running gnome on the Solaris box - I haven't been able to find any indication that that particular library is required for xmlrpc. I've looked everywhere I can think of for a hint, but haven't been able to find anything so far. Can anyone shed any light on this problem for me? Michael sweeney@verisity.com