When making a post, I got an error message telling the post is a dublicate of a post I've already made within the last five minutes. When in fact it was my first post today. It got posted nonetheless, in the General discussion News thread.

I'm not sure if there's any difference compared to the old, but the Quick Reply textbox could perhaps be a bit wider. Now it has plenty of wasted space on both sides. Assuming widening it isn't much trouble.

Edit: The Quick Reply made a double post here.