I upgraded to Joolma yesterday, and today noticed that I cannot post in Discuss. I'm asked to enter a Captcha, but there is no box available to do so. The comments all look really weird, and have the same issue. I tried to go check settings, and cannot navigate past the initial screen on any page (can't get to the tabs). I can only navigate in teh backend by the top menu under Components, not on the component menu itself.
EasySocial also seems to feel EasyDiscuss is not installed.