Ajax call results in 403 Forbidden error

Hi
When I try to receive some data (non-cross-domain) by using ajax on a controller/method the result is always 403 Forbidden. I am able to access that page myself from within my browser without any problems.

I've tried a lot of different things like trying to send post data or using a different browser. I've also removed the 'No direct script access allowed' but it gives me the same result.

By using various search engines Big Grin I came up with some similar problems. But none of them had a clear answer to the problem. I'd like to hear what I'm doing wrong or if it is a CI-bug. I am using 3.x development and I am aware of the bugs and/or problems it might have.

Thank
jili slot