>Not for me for creating a new message. Did you just try it?
>
>>It is under Chatter | Universal Thread related topics.
Yes, I just tried it.
Perhaps you should change the main popup ("Forum") back and forth, or even quit your browser - sometimes the second popup doesn't correct update, to reflect the selection in the first popup.
As far as I know, there is no option (in your setup) to specifically include/exclude individual categories - only entire forums.
Difference in opinions hath cost many millions of lives: for instance, whether flesh be bread, or bread be flesh; whether whistling be a vice or a virtue; whether it be better to kiss a post, or throw it into the fire... (from Gulliver's Travels)