For three days I have not been able to create a new topic in the forums. I am able to reply and make new posts within existing threads.
I have also noticed that the + sign for creating new post is green, while the + for creating new topic is orange. Not sure if this is how it is supposed to be, never paid attention to them until now.
Folks have been creating new topics without issue in the past 3 days. Have you tried a different browser ?
I can't say for sure but i'm under the impresssion that that one was always orange.