parser / compiler bug ?

hi zeev, hope you or someone else could give me a hint. occasionally php produces no output. i don't get any assertions, runtime errors or log entries, there's simply nothing. the webserver tells me that the cgi executeable produced no output. i have this problem mainly with larger scripts that depend on include files and com-objects so it's difficult for me figure out why it's happening. but it rarely happens with simple scripts too. since nothing of the script is executed i would say that php quits somewhere inside the parser or compiler. are there any possibilities to log parser and compiler activities ? maybe this would give a clue. harald. resistance is futile - nme.at