This is the second time this has happened to me and never happened on my iPad 2 w/AT&T. I've turned the cell service off so I can better manage my (cellular) data usage outside of wi-fi. I cart my iPad to work with me (no wi-fi) in case I want to use it at lunch etc. and when I checked it today and yesterday, the wireless had been turned back on when I'M POSITIVE I had toggled it off. Am I missing a setting and/or is this normal behavior? It's pissing me off. WTF?