"Nothing happens" (M)

To me, "nothing happens" is one of the most frustrating complaints to troubleshoot. What exactly does it mean that "nothing happens"? Do you click on the button, and absolutely nothing changes on your screen? (That's what nothing happens means to me) Does the post screen close and the main forum page open but your post doesn't show up? ("Something" happened there...it just wasn't the desired something). Does the Print Preview screen come up? etc

Are you the only one having this problem? Is it only on one forum? Clearly it's not a problem for you on this one. If it's only one forum, what's the forumID?