Upstream timeout

Hi,

I'm using nginx 1.4.0 as loadbalancer for 2 jetty servers. At my windows development/test system I have simple added the following to the default config:
upstream backend {
server 127.0.0.1:10000;
server 127.0.0.1:10001;
}
server {
server_name backend.myserver1.de;
location / {
proxy_pass http://backend;
}
}

backend.myserver1.de is just an entry in my local host config.
When I start everything it seems to work properly but after some requests, max 10, the nginx does not work anymore. no more requests are being processed. When I restart the nginx server, it works for the next few requests.
When I call the backendservers directy in the browser the requests are processed correctly.

I haven't tested in on a linux machine, maybe it will work there. But for testeing it would be nice, if it would work on my windows system too.

Any hints?


Kind regards
Thorsten