maybe a working install from nginx subdirectory?

gistfile1.txt

    location /blog/ {
       try_files $uri $uri/index.html /blog/index.php?$query_string;
    }

    location / {
      try_files $uri $uri/index.html @redwind;
    }

    location /foaf.rdf {
      default_type "application/rdf+xml";
      #add_header Access-Control-Allow-Origin "*";
    }

    location @redwind {
      include uwsgi_params;
      uwsgi_pass unix:/tmp/uwsgi.sock;
      uwsgi_param UWSGI_SCHEME $scheme;
    }

    location ~ \.php$ {
        try_files $uri =404;
        include /etc/nginx/fastcgi_params;
        fastcgi_pass unix:/var/run/php5-fpm.sock;
        fastcgi_index index.php;
        fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
    }