Another observation using a WiFi/3G iPad 2 (Verizon) -- Frequently this iPad 2 will not connect to the 3G network or to known WiFi until the unit is turned off and then back on. For example, this morning I was sitting in my car in a parking lot and needed to get some information on the web. The area I was in is a good 3G location. I typically keep the 3G off until I need it. I used the Cellular Data on/off slider and turned on the 3G, and even after waiting a few minutes there was no indication of a 3G connection. With the Cellular Data slider turned on I then used the Airplane Mode slider and turned that on then off. Only when it was turned off did the upper left corner indicate that it was searching for a 3G signal. It never found one. I had to turn the unit off then back on again to get the 3G connection. I have noticed this as well with WiFi, but not as frequently as the 3G connection.