I have recently migrated my EasyBlog from Joomla 2.5 to Joomla 3.
Everything is working well except when a user tries to add a comment.
When a registered user attempts to add a comment, the throbber beside 'leave your comment' repeats endlessly, and so the user thinks the comment has not been sent.
It does, however, appear in the list of comments in the backend.
Edit:
I just changed "Error Reporting" in Global Configuration back to simple.
The comments problems is now gone.
Either that was the solution or you have done something yourself.