I'm not sure what changed...I only recall doing aesthetic changes, nothing code wise, but all of the sudden, registered users can no longer submit comments on K2 articles
I've already checked the setting and registered K2 users *are* allowed to leave comments
You can type in your comment just fine, but when you hit "submit" all that happens is a spinning arrow wheel - walked away from 10 minutes to see if it was maybe a lag thing, but it was still going, no comment submitted.