Mise en place d'un proxy en utilisant nginx

Je tente de configurer un proxy en utilisant nginx, mais il redirige au lieu de le proxy (c'est du moins ce qui semble). Ma configuration de virtual host :

server {
    listen 80;

    server_name proxy.example.com;

    location / {
        proxy_pass              http://thepiratebay.se/;
        proxy_redirect          off;
        proxy_set_header        Host            $host;
        proxy_set_header        X-Real-IP       $remote_addr;
        proxy_set_header        X-Forwarded-For $proxy_add_x_forwarded_for;
        client_max_body_size    10m;
        client_body_buffer_size 128k;
        proxy_connect_timeout   90;
        proxy_send_timeout      90;
        proxy_read_timeout      90;
        proxy_buffers           32 4k;
    }
}

Ai-je fait une erreur quelque part ?

La sortie de la requête cURL vers mon proxy :

> GET / HTTP/1.1
> User-Agent: curl/7.19.7 (x86_64-redhat-linux-gnu) libcurl/7.19.7 NSS/3.13.1.0 zlib/1.2.3 libidn/1.18 libssh2/1.2.2
> Host: proxy.pieterhordijk.com
> Accept: */*
>
< HTTP/1.1 301 Moved Permanently
< Server: nginx
< Date: Sat, 19 May 2012 00:27:35 GMT
< Content-Type: text/html
< Connection: keep-alive
< X-Powered-By: PHP/5.4.1
< Location: http://thepiratebay.se/
< Content-Length: 0
<