Sounds like a good idea to me. While we got rid of our wireless Internet in our classrooms after the Christmas break (by unanimous decision of the faculty council), students still bring laptops to class. Just last week one of my colleagues was complaining how a student was clicking away during a presentation by another student — very annoying. I don’t have strong feelings about banning laptops, though nothing irritates me more when I am lecturing (or a student is asking a question, etc.) and a student is clicking away on their laptop in a way that suggests they are NOT taking notes. Of course, if someone is actually taking notes and is not being disruptive to other students, then I don’t have a problem with it.
If you want to read about someone who banned laptops in the classroom, check out this post over at The Volokh Conspiracy.
What do other professors/students think?