A LAW PROF:
"I suspect that use of laptops during class time for playing games, surfing the net, eBay auctions, day trading, and online gambling are rumors, though I do wonder why one of your colleagues the other day jumped up from his seat during class and yelled 'you sank my battleship!'
In addition to the above mentioned items, keep in mind that typing everything I say is counterproductive to learning. It is probably best for most students to take short notes, otherwise you spend your time trying to type everything without spending any time thinking in class. In any one class there is probably less than a page of noteworthy material. The rest is designed to help you think through a problem. "