By clicking on the forum link you do not get to the main forum page with all of the categories listed on it. Oh no. What you must do first of all is to click on the Forum link. You will see 5 or 6 links which have nothing to do with what you want, ie the main forum page with all the categories. One of these links is New Posts. You must click on the link for New Posts. When you are on the new posts page, it is then that you must click on the Forum link. You will then get the page with all of the cats !