I'm a student in an online class at university, and we're now a few weeks into the course. So far, only two lectures have been uploaded—there should be six or seven. On the course discussion board, many students have expressed concern that we're behind and have asked when we can expect course content to be published. The professor has indicated multiple times (the first time was two weeks ago) that he's working on getting caught up and will post lectures soon. If I heard that once and things changed, I might believe it, but the professor still hasn't posted anything beyond those two previously mentioned lectures.
What's the appropriate way to handle this situation, and how can I ensure my success in this class?