Hi, I'm using PHPBB with Litespeed during two months and it work well. I'm using phpBB 3.05 , 5.0.77-community, PHP 5.2.8. But some of my members receive this error and they try to access to a forum : 503 Service Unavailable The server is temporarily busy, try again later! Powered By LiteSpeed Web Server LiteSpeed Technologies is not responsible for administration and contents of this web site! And they need to erase the forum cookies and after, it work perfectely. I never receive this error, but a lot of my members are receiving this error. DO you have an idea? thanks !