I upgraded WordPress to 3.5 today, and it appears that the Ajax Edit Comments plugin is not working. It’s sending you a lot of garbage when you comment and then not letting you in to edit (although the comments are actually showing up fine). After researching, I’m finding that others have the same problem.
I’ve decided to temporarily deactivate the plug-in and hope that they get an upgrade to it quickly. In the meantime, I’m afraid you’ll be unable to edit posts after making them, so take a quick extra read before hitting the button.
… oh, and apparently there’s peanut butter on the remote.