It's probably only on Elliquiy.  The exact wording is as follows:<br/><br/>Warning - while you were reading a new reply has been posted. You may wish to review your post.<br/><br/>If it's more than one post, it'll say however many new replies.<br/><br/>Just check the very top of the browser window title to see if it still says Post Reply or if it changes to Light, Bondage or whatever.