after upgrade to new version ISPConfig was unavailable with this message in apache error.log:
[Wed Mar 13 21:57:02 2013] [error] [client 184.108.40.206] client denied by server configuration: /htdocs
I had to enable apache modules fcgid and than apache complains with this message:
* We failed to correctly shutdown apache, so we're now killing all running apache processes. This is almost certainly suboptimal, so please make sure your system is working as you'd expect now!
... waiting Syntax error on line 28 of /etc/apache2/sites-enabled/000-apps.vhost:
Invalid command 'SuexecUserGroup', perhaps misspelled or defined by a module not included in the server configuration
so I had to enable suexec module too.
I don't use these modules on some servers because I don't need them until now. Requires the new version of ISPConfig these modules installed or can I change some config for turning off these modules?