It's in the forum, top level post. The text says "Delete topic" right next to the edit button, but it doesn't seem to delete the topic. It's still in my list of recent posts on my page. A window pops up and asks "Are you sure you want to delete this post?" I click ok but nothing at all seems to happen. Just checked again and it's still there in case it took some time to update or something.
PS deleting replies does seem to work since I just did it when I accidentally replied to myself just now instead of to you.