What would people recommend I use as a Opcode Cache? APC, Xcache or eacclerator? I'm currently running my site with FastCgi mainly so that all the sites I host run under the sites users and any files uploaded have the correct file ownership. I've been told that as my site is using FastCGI, not all the opcode cache will work, Is this correct? Alternatively I could not use FastCgi and run php as the apache user, but how would I then deal with the file upload permissions? I'm not keen on using suPHP as I've been told this will slow my system down even further.