I have a strange problem. I set up my email while I was at work on my ipad2. Then I came home and after that time never have taken my iPad to work. At home I have a wireless router. I can surf the web fine. But there is no wifi icon on my iPad. It ha disappeared. Also in the settings if I try to turn the wifi on it does not stay on but Internet connection works fine. I don't have the 3G iPad 2. What is going on?