Hi. Im converting to litespeed because running with suexec its the fastest webserver by far. And i used the litespeed's php compiler/etc thingy to build php 5.2.14 with no real problems. However some of the sites started having some strange issues, mostly related to when apc.include_once_override is enabled it was causing wordpress sites to error with: "Call to undefined function wp_dashboard_setup". I discovered it is because litespeed's php compiler used a beta version of APC (3.1.3p1) instead of the stable version (3.0.19). Compiling the stable APC version myself and restarting the php processes instantly solved the problems on all the sites involved. I admit that the stable version is rather old, and the beta version of APC seems 'good enough' when you do some quick tests. But I think its important that there should be lots of red text and popups and warnings and notices when something wants to use beta software for a 'professional high performance webserver'