http://www.litespeedtech.com/docs/webserver/config/adminserver/#enableCoreDump
move core dump path, you can change kernel configuration via /proc/ or sysctl.conf
to trouble shoot the 100% cpu issue, may need the debug build of lshttpd, and attach to the process with GDB.
Please contact bug@litespeedtech... for further assistance if need.
It should work well.
RewriteCond %{HTTP_REFERER} ^http://(.+\.)?(myspace|blogspot|livejournal)\.com/ [NC]
RewriteRule .*\.(jpe?g|gif|bmp|png)$ - [F]
is more efficient
Have you enabled rewrite in .htaccess? You can trouble shoot it by enabling rewrite log.
We noticed similar behavior from another web site.
I think it relates to the cookie sent by browser, PHP somehow does not like it and do something strange.
The difficult part is that we cannot reproduce it easily to trouble shoot it further.