"I tried this out today in school where we have IE8 and when I went in as a teacher to mark an assignment I couldn't click into the levels at all. I tried to switch to compatablity mode (that is, IE7 I guess) and for the first criterion I had a radio button which I could click - but then it just vanished; the page refreshed and it vanished as did any other radio buttons for my other criteria -so I couldn't use it. At home in Firefox it worked fine. (But my school, whenever we get Moodle2 - we use IE!)"
The report copied from http://moodle.org/mod/forum/discuss.php?d=184393#p827891