No worries. Just Relax. That message is mainly targeted to those who are visiting Steemit for the first time. So that they can register an account driven by the desire to earn money by becoming a regular Steemian. Even sometimes when the network is very slow you will see weird messages while making a post, comment, resteem or doing an upvote.. but it's not anything to worry about. It could be either your internet connection turned slow or the Steemit network got slow or both.