I bought a used iPhone 3GS, and overall it works great. But when I try to put a new app on it, it asks me for a password! Apparently the previous owner set it up with his own password. Is there any way I can get it to stop that? Would a reset work? If I can get hold of the previous owner and he helps me out with the password, how do I then get it to stop asking for passwords at all? I'll probably (later) set it up with my own. But for now, if I can get the old password, how do I get it to stop? Thanks all!