Better Status Report Output: New warnings post update - jQuery CDN and gzip

It seems to have made a comment every time i edited.

Sorry this has taken so long, I've been having some nginx issues and I had to try and recreate my dev environment.

The warnings are now all updated and useful. I'm getting the following warning in the gzip section.

stdClass Object
(
    [request] => GET /sites/default/files/advagg_css/css__ID3ivBrID6pZQ1vSRjpQ41oTIzvOWQGcGRTG_Doz8CQ__a45-y5M6urySp59zN4LuSPy2L9tpvAiWOAbbHxeUXAw__smMK2QSt2dYiHjUPvNlMbz9kHT6L1VvTMhhdoElL4UM.css HTTP/1.0
Accept-Encoding: gzip, deflate
User-Agent: Drupal (+http://drupal.org/)
Host: eslsearch.net


    [data] => ...
    [protocol] => HTTP/1.1
    [status_message] => OK
    [headers] => Array
        (
            [server] => nginx/1.1.19
            [date] => Wed, 13 Nov 2013 19:42:58 GMT
            [content-type] => text/css
            [content-length] => 7523
            [connection] => close
            [vary] => Accept-Encoding
            [expires] => Thu, 31 Dec 2037 23:55:55 GMT
            [cache-control] => max-age=290304000, no-transform, public
            [last-modified] => Wed, 20 Jan 1988 04:20:42 GMT
            [accept-ranges] => bytes
        )

    [code] => 200
)

Other possibly useful bits of information:

I'm running Ubuntu Server 12.04, on a LEMP stack with the default nginx configuration. The relevant lines in my /etc/nginx/sites-available/mysite are below.

I'm new to nginx configuration so it's possible that I've mis-configured it (still learning) however with the chunk below removed or present I still get the gzip error.

server {
      ...
      ...
           location ~* files/advagg_(?:css|js)/ {
                access_log off;
                expires    max;
                add_header ETag "";
                add_header Cache-Control "max-age=290304000, no-transform, public";
                add_header Last-Modified "Wed, 20 Jan 1988 04:20:42 GMT";
                try_files  $uri @drupal;
            }
}

Unfortunately that has no effect. However turning off Secure pages removes the error. I have the same advagg config below in my secure nginx config. Does HTTPS need a different configuration?

server {
          listen 443 ssl;
            ...
            ssl on;
            ssl_certificate      /etc/nginx/ssl/mycert.crt;
            ssl_certificate_key  /etc/nginx/ssl/server.key;
            ...
            ...
            location ~* files/advagg_(?:css|js)/ {
                gzip_static on;
                access_log off;
                expires    max;
                add_header ETag "";
                add_header Cache-Control "max-age=290304000, no-transform, public";
                try_files  $uri @drupal;
            }
}

Possibly relevant, I already have gzip enabled in my standard nginx conf: /etc/nginx/nginx.conf

...

http {

       ...
       ...

        gzip on;
        gzip_min_length  1100;
        gzip_buffers  16 8k;
        gzip_vary on;
        gzip_disable "msie6";
         gzip_proxied any;
         gzip_comp_level 6;
         gzip_http_version 1.1;
         gzip_types text/plain text/css application/json application/x-javascript text/xml application/xml application/xml+rss text/javascript;

}

Also when I run YSlow on my page I'm not getting any complaints that anything isn't gzipped. I still have my A rating.