I don't know for sure that this belongs in the iPad forum, but the behavior I'll describe seems not to be happening on my iPhone, just my iPad. Over the past 24 hours or so, I've found that whenever I open the App Store application, it now immediately asks for my password. Until now, I've been asked for my password when I want to download or buy something, but not when I just open the store to browse. Oddly, if I dismiss the dialog that is requesting the password, I can continue to browse the store. I have tried logging out of my account and then logging back in. And I am not seeing this on my iPhone. A puzzle. If anyone knows how to make this stop, I'm all ears.