FCKeditor is a legacy editor, it does not surprise me that it doesn't work well in IE 9. No-one is maintaining it, they only work on CKeditor now. My advice is don't use FCKeditor.
When I try the demo site using CKeditor and IE 9 it works for me. I suggest try using a different machine and see if you get the same result with IE 9 on a different machine. or just use TinyMCE.
please when posting in the forums help us keep it organized by posting only 1 question per thread. Start a new thread when you have a new question.
I'm going to update the 188.8.131.52 release today with the updated mojoPortal.Web.dll that I sent you to patch the role issue.