[webizen]

Originally Posted by Home Alone

... Why is it running as an external application?

It is for security.

http://www.litespeedtech.com/php-litespeed-sapi.html

since you have suEXEC disabled, you can leverage opcode cache as well as LSWS build-in cache (http://www.litespeedtech.com/support...ache:vbulletin) for vbseo performance improvement.