I have one local Apache instance running with mod_cache (+ disk & mem) enabled, and it seems to cache content from my appserver fine. My app server sets Expiration headers and Last-modified. Yet, when deploying on a production server with the same modules enabled, I am getting the following error in my logs: blablabla not cached. Reason: Query string present but no explicit expiration time

Any clues on why Apache is not caching content? The only difference is the Apache version. Locally I am running 2.2.

This is from my config

    CacheRoot   "/var/cache/apache2/"
    CacheEnable disk /

This is example output

< HTTP/1.1 200 OK
< Date: Mon, 19 Nov 2012 16:09:13 GMT
< Server: Sun GlassFish Enterprise Server v2.1.1
< X-Powered-By: Servlet/2.5
< Expires: Tue Nov 20 05:00:00 CET 2012
< Last-Modified: Mon Nov 19 17:09:13 CET 2012
< Cache-Control: no-transform
< Content-Type: application/x-javascript
< Transfer-Encoding: chunked