Hi Folks I am running several virtual domains on ISPConfig (Ubuntu 14.0.4/ Apache 2.4.7/ MySQL 5.5.61). One of the sites is very old and I have kept it going by installing an additional php (5.3.29) just for that site (it needs register_globals on). It has been working fine for a couple of years but recently has started to timeout on all pages (500 error), including a phpinfo page... The errors in the logs looks like this: [fastcgi:error] [pid 16239] [client xxxxx:54559] FastCGI: comm with server "/var/www/clients/client4/web1/cgi-bin/php5-fcgi-*-80-xxxx.org.uk" aborted: idle timeout (300 sec) [fastcgi:error] [pid 16239] [client xxxxx:54559] FastCGI: incomplete headers (0 bytes) received from server "/var/www/clients/client4/web1/cgi-bin/php5-fcgi-*-80-xxxxx.org.uk" If I restart apache the problem goes away but soon access slows down and then times out again. The other sites on the server are not affected. I have no idea how to debug this and would welcome any suggestions... Thanks