Thanks. I can't get litespeed to work. Something happened at 16:39 ish, and now Litespeed won't talk to it's own PHP process. I've uninstalled and re-installed Litespeed, and I'm just rebuilding PHP for it now.
We are back on Litespeed! I've had to disable ZendOpcache, as it looks like that is the problem. I only recently upgraded to PHP5.6.12 on the server, but it was working fine previously. Taking a look at what the issue could be now.