Hi, I tried to post a comment on an article in http://www.physicspost.com/articles.php?articleId=238 [Broken]. When I click on "Add Comment" at the bottom of the page it sends me on the same page so that I can't post any comment. Furthermore I tried the same with Internet Explorer and it redirect me at the principal page (http://www.physicspost.com/). I wonder if this problem occurs only with me, or other people are in the same situation. P.S.: I'm using Firefox.