Hi all! I have got a Debian 6.0.3 server, with nginx 1.0.11 and php5-fpm 5.3.10. I have a virtualhost using PHPBB. I randomly get Internal Server Error 500 for this virtualhost. There is no trace of any error in nginx error log, nor php-fpm error log, nor php.log. How. where can i find what is causing my problem? Thx.