Also having this problem with the so-called "one-time password", the problem lies with my account, not with my ip address or computer. My son, has an account (preferred status) while mine is subscriber. We use different computers and different connections normally and he never gets asked for a "one-time password" but if I try to log onto my account on his computer and his connection guess what happens? "Please enter your one-time password."
VERY FRUSTRATING. You guys need to seriously consider renaming it to "every-time new password"