No turn off because it's importance.
1. Go 'admin > switch programs' and then select 'none' for all. Then, select nginx-proxy, none, nsd and bogofilter
2. Go to 'admin > servers > localhost > php configure' and then click update
3. The same way with step 2 for 'admin > php configure'
4. Go to 'admin > webserver configure > php type' and then select 'suphp_event'. Then, select 'php-fpm_event'.