I have Litespeed on my Dedicated Server.. and I have been tweaking to see why is this happening.. I use Xfilesharing Pro on 1 site and user Wordpress on another site.. both on the same server. The wordpress site never goes down.. but the other goes offline often. The only difference I saw between the two is that Xfilesharing uses index_dl.cgi,upload.cgi and api.cgi instead of php files like wordpress. So I modified Max CGI Instances and put 100. Is this the solution?