I have a serious problem and start to get nutty.
Whatever the type of form that is to be inserted, for example, articles, when I insert something like "<iframe> </ iframe>", submitting, or even canceling, gives error.
The fire bug does not help, it gives no error, I have almost a week to look for solutions and trying everything I was finding.
Even I do not have filters for users, thus assume that is not what is giving error.

Here the error:

"

Forbidden

You don't have permission to access /bn/EA/index.php/component/cck/ on this server.

Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request.

"

I'm using Joomla 3.3.1 and seblod 3.3.5.

Sorry for my bad English.
Please help me.

best regards,
BN