[NiteWave]

lsphp5 settings:
http://cl.ly/image/1d2R2C1B1c07
Max Connections:1000 --> too large ? suggest 100 or 200
PHP_LSAPI_CHILDREN=500: should match "Max Connections", i.e., 1000. suggest 100 or 200
Instance:10 -> change to default 1

Run On Start Up:Yes --> change to suEXEC Daemon

http://cl.ly/image/1q3L1B1L0f0r
Priority:-4 --> suggest to try 0

http://cl.ly/image/2F0U2E2g1q1I
Smart Keep-Alive:Yes -- > No

http://cl.ly/image/0A0n1w2B073A
ajax.php is busiest one. see if possible to cache it

as discussed before, if able to enable lsws page cache correctly, the load may drop significantly; however this may need good knowledge of PHPFox.