Lighttpd

Hello,

I've a questions on how Lighttpd manages SSL and non-SSL hosts :

I've few virtualhosts listening on :80, and one host dedicated to :443.
in my config, I tried so :

$SERVER["socket"] == "PUB_IP:443" {
   server.errorlog      = "/var/log/lighttpd/serror.log" 
   accesslog.filename   = "/var/log/lighttpd/saccess.log" 
   ssl.engine           = "enable" 
   ssl.ca-file          = "/etc/lighttpd/ssl/ca-certs.crt" 
   ssl.pemfile          = "/etc/lighttpd/ssl/domain.tld.pem" 
   server.document-root = "/dev/null" 

   $HTTP["host"] =~ "^sub\.domain\.tld$" {
      server.document-root = "/var/www/" 
      server.name = "sub.domain.tld" 
   }
}

and for non-SSL hosts :

$HTTP["host"] =~ "^anothersub\.domain\.tld$" {
        server.document-root = "/var/www/servers/anothersub.domain.tld/" 
        auth.require = ( "" =>
                (
                "method" => "digest",
                "realm" => "anothersub.domain.tld",
                "require" => "user=toto" 
                )
        )
        $HTTP["url"] =~ "^/root/" {
                dir-listing.activate = "enable" 
        }
}

redirect http to https

$HTTP["host"] =~ "^sub\.domain\.tld$" {
        $HTTP["scheme"] == "http" {
                url.redirect = ( "^/(.*)" => "https://sub.domain.tld/$1" )
        }
}

=> Debian Lenny on i386 server, lighttpd installed with aptitude (ssl included)
=> modules enabled : simple-virtualhosts, status, ssl,auth, fastcgi

. virtualhosts works really great
. when I load ssl host : all my hosts listen http and https instead of only the sub.domain.tld
. my certificates disappeared when accessing the website sub.domain.tld
. if I try $SERVER["socket"] == "PUB_IP:80" { ...all my vhosts ... } to separate sockets and hosts, it doesn't work

Questions :
. is that normal ? I just need the dedicated host listen on 443, not the others !
. the objective of this ssl host is to provide OpenERP, it seems I've to use module proxy.
if anyone tried this webapp with lighttpd, any council would be really appreciate ...

thanks !