Lighttpd

I'm running tracd & lihttpd 1.3.13 using this config:

$HTTP["host"] == "projects.example.com" {
  proxy.server = ("" => ( "trac" => ( "host" => "127.0.0.1", "port" => 9090 )))
}

Nothing happens on tracd shutdown (in my first case it just crashed, i killed it for following tests), but as soon as someone points his browser to url that should be proxified, logging goes nuts. It starts writing over 30 lines a second in error.log, staritng like this:

2005-06-27 03:06:43: (mod_proxy.c.918) error: unexpected close of proxy connection for / (no proxy process on host: 127.0.0.1, port: 9090 ?)
2005-06-27 03:06:43: (mod_proxy.c.700) establishing connection failed: Connection refused 
2005-06-27 03:06:43: (mod_proxy.c.918) error: unexpected close of proxy connection for / (no proxy process on host: 127.0.0.1, port: 9090 ?)
2005-06-27 03:06:43: (mod_proxy.c.723) write failed: Broken pipe -1
2005-06-27 03:06:43: (mod_proxy.c.817) proxy-server disabled: 127.0.0.1 9090 10 

then repeating following lines until disk gets full

2005-06-27 03:06:43: (mod_proxy.c.918) error: unexpected close of proxy connection for  (no proxy process on host: 127.0.0.1, port: 9090 ?)
2005-06-27 03:06:43: (mod_proxy.c.1088) unhandled proxy.state 3 
2005-06-27 03:06:43: (mod_proxy.c.918) error: unexpected close of proxy connection for  (no proxy process on host: 127.0.0.1, port: 9090 ?)
2005-06-27 03:06:43: (mod_proxy.c.1088) unhandled proxy.state 3 
2005-06-27 03:06:43: (mod_proxy.c.918) error: unexpected close of proxy connection for  (no proxy process on host: 127.0.0.1, port: 9090 ?)
2005-06-27 03:06:43: (mod_proxy.c.1088) unhandled proxy.state 3 

lighttpd itself won't crash and continue to work, but it always tries to log even after drive is full.

Some relevant info:

# lighttpd -v
lighttpd-1.3.13 (ssl) - a light and fast webserver
Build-Date: Apr  3 2005 23:49:27

(debian build)

I was able to reproduce the error more times but I haven't tried another systems/builds.