Apache error question

Hi, I recently installed PHP4 on many of our servers and on one I get this message when starting Apache: Setting up Web Service: Extensions are not supported on this platform. What does that mean and what is causing it? Also, strangely, on that server, Zend Optimizer does not seems to be working (it is not displayed on a phpinfo() call) so I guess both are related somehow (??) Anyone has any idea? (please e-mail me directly for a faster answer as well) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Félix C.Courtemanche . Head Designer Co-Administrator . Can-Host Networks http://www.can-host.com webmaster@can-host.com