What does it take to enable AJAX?

Hi,

I am trying to enable AJAX on my site and I have

- installed and enabled AJAX module (AJAX, AJAX UI)
- Run Update (to tables - 0 changes to tables...)
- Flushed all caches
- Activated the content types I want under /admin/settings/ajax
- Given permission (ajax_ui module - administer ajax forms)

And still I have no luck in getting the AJAX Checklist to work, or anything else AJAX for that matter. Pages load all the time oldfashioned way.

One odd thing - I installed Brilliant Gallery prior to AJAX and It works without installing AJAX... Hmm they must use embedded AJAX then.

Please help - What am I missing here????

Thanks guys

Morten