PHP has encountered an Access Violation at 119F4CE6

The ISP where a client of us is hosted just started issuing this error when accessing any PHP script (e.g. a script with a call to phpinfo() ): PHP has encountered an Access Violation at 119F4CE6 The behaviour is totally unpredictable: it is functioning well now and then it starts issuing this Access Violation errors, or Internal Server Errors, and so on... I contacted them and they must probably have just restarted the HTTP Server service (IIS) in order to make things come back to normal. Has the PHP developer team tracked these errors down already? It shall most probably be some problem related with the Windows OS *environment*, not specifically Windows (be it NT, 95/98 or Win2K), HTTP server, or PHP. My concern is that we *do have* clients that run over Microsoft platform, so it is not a solution to us to move to UNIX at the moment. I have not seen one port of PHP over Windows to be really stable. We have tested almost all configurations always with some kind of unpredictable memory errors, Internal HTTP Server Errors (error 500), or caching problems: we have tested PHP versions CGI and ISAPI, versions 4.0.2, 4.0.3pl1, with and without ZEND optimizer, over IIS and Apache, over Win98 (Apache) and Win NT4 (IIS) with service pack 6 and option pack 4. We shall still have more experimentation with these combinations, but if anybody has already some more detailed information about these issues please inform us. I reference here the following links to problems we've been experiencing or similar to them: http://marc.theaimsgroup.com/?l=php-general&m=96907546114684&w=2 http://marc.theaimsgroup.com/?l=php-general&m=95988426721865&w=2 http://marc.theaimsgroup.com/?l=php-general&m=97847365303717&w=2 http://marc.theaimsgroup.com/?l=php-general&m=97852842527618&w=2 TIA, Paulo