Hi !
I have the same problem as already described in
this topic, but unfortunately, the solution is not the same, as I don't have any conflict with another editor. And I am using IE6, not IE7.
It is set as the default Editor, no other editor installed, I even tried to remove other editor plugins and buttons, but nothing made it work.
With the previous installed version, 3.2, everything was working fine.
I am using Joomla 1.15.20, JoomlaCK 3.3.1, IE6 and otherwise our Joomla installation works fine. On real browsers like FF and Chrome, no problem of course...