We had a spam protection program running that apparently thinks all posts are spam, even posts from me.
This has been fixed and a new “Create new topic” link has been added to the topic if you are viewing forums. If you are viewing a thread, it is assumed you want to post a reply, so that is the choice you will see at the end of the thread. If you want to post an entirely new topic, you need to go to go up a level.
Please respond to this post to help be trouble shoot and let me know if any of this makes sense.