LSAPI_CHILDREN ignored?
 

Doh. I figured it out as soon as I posted. Suexec is enabled!

So a followup question,
Can anyone tell me how to change the PHP suEXEC Max Conn setting from apache config, per-virtualhost?

can't change that through apache config; it's server level setting, mean can't set it per vhost.

however, it's a "max" value, won't fork 5 lsphp process if only one is needed.