I think the "scritp time" in php is not the problem ... First try the web services you use or the link that provides you with data directly from the browser using the url and passing the variables in mime format... si todo va bien, entonces hay que revisar el scritp cliente. Do you use your httpservice or UrlLoader? if URLloader is loading with the POST method then program the event listener for these:
HTTPStatusEvent Event.COMPLETE * IOErrorEvent.IO_ERROR SecurityErrorEvent.SECURITY_ERROR -- Sent from: http://apache-flex-users.2333346.n4.nabble.com/