Helo guys, hope someone can help me, I've tried many solutions find on internet but it didn't work here is the issue : when I enabled zend opcache, I have an error 500, can't access to my website anymore and the ispconfig panel too when I check apache logs I have this error : (104)Connection reset by peer: mod_fcgid: error reading data from FastCGI server, (104)Connection reset by peer: mod_fcgid: ap_pass_brigade failed in handle_request_ipc function I can't find what is causing the problem and opcache.ini is in /etc/php5/conf.d/ and /etc/php5/cgi/conf.d thank you for your help Debian 6, ISPConfig Version: 3.0.3.3 apache 2 and php 5.3.3 website config: CGI, fast-cgi and suexec