At night I turn off wifi(offline mode) to save battery life (I turn off wifi so when a new email comes the LED doesn't stay flashing all night and use up battery). But lately it seems to do the opposite. When I turn it on in the morning the battery has gone down more than during the day. I don't know if it is just my imagination, but it seems to be consistent. I'll try turning off notifications at night and see if it makes a difference. Anybody else experience this or is it just me?