I have had a problem that has recurred numerous times, enough times that I want to do something about it if I can. Nearly every time I have the iPad fill in my e-mail address, the address is not accepted. As I look at it, it IS correct in appearance, but time and time again, when I hit "Submit", it comes back with invalid e-mail address. If I retype it, exactly as it was, it works. What do you think?