[Plugin: AJAX Report Comments] Comments cannot be unmarked as spam

Hi, I encountered the problem that comments were classified as spam with Akismet. I tried to “unspam” them, but the marker always jumped back to spam. There was also something that looked like an empty message box at the list of comments. I then disabled various plugins and found that with disabled AJAX Report Comments it started working again and the comment could be marked as “ham”. So, I have no clear evidence but I assume it has to do with that plugin. It happened only with the latest WP 3.1, before all was fine. Maybe others have experienced the same?