Every time you make changes such as creating a subdomain ispconfig apache restart it. This is correct right?
I noticed that every time I change the other apache processes no longer work.
The only apache process that remains running is:
root 4443 0.1 0.0 4844 1408 ? S 17:42 0:00 /bin/sh /etc/init.d/apache2 restart
It may be a fault in the daemon /etc/init.d/apache2 or /etc/apache2/envvars?