Strange, not sure if this is a bug or if I've hit some preset per-day posting limit.... :-P
I can't post in Talk About, when I submit a reply to a thread where I was clearly right :-P and on the verge of converting KennyR to a Capitalist, I got a message that said I wasn't allowed to post to that forum. Then when I listed the thread, the Reply buttons on all posts were missing. Looked through Talk About, and it was the same for all threads, but I can post outside of Talk About.
Is this a per-forum cap that I hit?