It seems as though the Wi-Fi doesn't stay connected after I lock the screen. When I turn it on from sleep, I look at the network icons and see that it's connected to 3G. After a second or two, it then connects to the Wi-Fi immediately. I thought it should be connected to the Wi-Fi at all times, even when sleep. This would save me a lot of battery life as I don't have great reception here. Does this happen to anyone else?