GMGruman writes: Who'd a thunk it? Several thousand developers and reporters in one room, with more than 1,100 trying to tweet, blog, and file stories over Wi-Fi. So many in fact that Apple CEO Steve Jobs couldn't do his demo of the new iPhone 4, because he couldn't open the Web pages he wanted to show. InfoWorld's Galen Gruman was there (reporting over 3G, NOT Wi-FI!) and tells the tale.