Linux – Segmentation fault lighttpd

Hey guys, I can't figure this out, when I add the fastcgi module to lighttpd when I try to connect to a php page, I get a segmentation fault error. Nothing is in the error log, and nothing else is printed on the crash.
It seems to only be a problem with php pages; if I connect to an html page, while the fastcgi module is on, the server doesn't crash.
Also, I get a Error 324 (net::ERR_EMPTY_RESPONSE): Unknown error. when I connect to a php page.

The conf files.

lighttpd.conf

var.log_root    = "/var/log/lighttpd"
var.server_root = "/var/www"
var.state_dir   = "/var/run"
var.home_dir    = "/var/lib/lighttpd"
var.conf_dir    = "/etc/lighttpd"

var.vhosts_dir  = server_root + "/vhosts"

var.cache_dir   = "/var/cache/lighttpd"

var.socket_dir  = home_dir + "/sockets"

include "modules.conf"

server.port = 80

server.username  = "lighttpd"
server.groupname = "lighttpd"

server.pid-file = state_dir + "/lighttpd.pid"

server.errorlog = log_root + "/error.log"

include "conf.d/access_log.conf"

include "conf.d/debug.conf"

server.event-handler = "poll"

server.network-backend = "linux-sendfile"

server.max-fds = 2048

server.stat-cache-engine = "simple"

server.max-connections = 150

index-file.names += (
  "index.xhtml", "index.html", "index.htm", "default.htm", "index.php"
)

url.access-deny             = ( "~", ".inc" )

$HTTP["url"] =~ "\.pdf$" {
  server.range-requests = "disable"
}

static-file.exclude-extensions = ( ".php", ".pl", ".fcgi", ".scgi" )

include "conf.d/mime.conf"

include "conf.d/dirlisting.conf"

server.follow-symlink = "enable"

server.upload-dirs = ( "/var/tmp" )

modules.conf

server.modules = (
  "mod_access",
  #"mod_fastcgi" #Not needed, referenced in /conf.d/fastcgi.conf
)
include "conf.d/fastcgi.conf"

conf.d/fastcgi.conf

server.modules += ( "mod_fastcgi" )

fastcgi.server = ( ".php" => (( 
                     "bin-path" => "/usr/bin/php-cgi",
                     "socket" => "/tmp/php-fastcgi.socket" 
                   ))
                 )

Thanks,
Max