Anyone else experiencing this? My iPhone tries to send iMessage to people I know don't have an iPhone. For example, I text my sister and it tries to push a blue bubble through, and she's never had anything more than an older iPod. So there's no way it could even be trying to push to an email address. Only way it stops is if I turn iMessage off, which of course isn't an option I want full time. I've done a fresh restore. Any other ideas?