That message you see is above every typing box, where you type your message then click Preview then Submit.
Are you saying that the page 'below' that message is blank? I've just been to the Samsung forum and tried a new thread, and also tried replying to some existing threads, and I don't seem to be having any problems.
May be this is a temporary glitch and will be OK when you try again.
I was wondering if the manufacturers forum fore Samsung is broken as I cannot post to it.
Note: If you're asking for technical help, please be sure to include all your system info, including operating system, model number, and any other specifics related to the problem. Also please exercise your best judgment when posting in the forums--revealing personal information such as your e-mail address, telephone number, and address is not recommended.
This is the warning I get.