It appears as if the Zend Optimizer is distributed only in binary format. They have versions for Linux on i386 and versions for Solaris running on a Sparc Ultra processor. However, I'm running Linux RedHat on a Ultra Sparc processor. Is there any way I can install Zend Optimizer? Robert Schultz - [EMAIL PROTECTED] -- PHP General Mailing List (http://www.php.net/) To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] To contact the list administrators, e-mail: [EMAIL PROTECTED]