Thank you for the information (and screenshot). I've just tried viewing the forum and various pages (main index, topics, posts, etc) on two different laptops both while logged out and logged in and they looked fine from this end. I'm not exactly sure why you are experiencing this issue. What browser are you using and also, have you tried completely logging out of the forum and chat room, leaving the site altogether (so it won't be re-cached) and then clearing all of your browser's cache and history (everything and for all dates)?.
Also, how many hours or days ago (prior to posting this) did you first notice this issue?.
Please let me know if this helps and thanks for the heads up