included files not reread by php when i edit the files

While editing pages, for some reason (default setting? / configuration problem?) the changes i make in included files (with sometimes quite some nesting) are not recognized when reloading a page. So i see errors that belong to the previous version. What setting could do this? I'm quite sure the browser is not caching the page. Win98 + 'foxserv', that is: apache, mysql. php, zend. Using: Postnuke 0.7.1 with sessions (it did not happen before the sessions, but cannot imagine the sessions do this.). I would suspect zend but it also happened with the normal php 4.06. cheers, Chris -- ! please check my email address ! ! only my email chayes@antenna.nl works ! ! email chayes@xs4all.nl is a black hole since januari 2002 ! Chris Hayes - Droef 35 - Wageningen