Chunked..

[Lennie]

You haven't told us a lot.

If you are service static files like PNG, JPG, CSS or JS you should have no chunking if you have no special rules in your webserver. You might have automatic compression of CSS, JS setup I don't know.

Are you serving HTML through a CDN ? Or maybe generating CSS or JS on the fly ?

If you are using something like PHP to generate HTML, CSS or JS, you should be looking at flush() and ob_* (ob_flush () and friends) function calls.

If you are doing gzip compression in PHP, maybe something like ob_start ('ob_gzhandler') or http://www.jpcache.com/ you should look into that as well.

Maybe you should check if you are using the Vary-header correctly.