I needed to log onto my Yahoo account which I haven't used in a while to get an email address, but it says "We don't recognize this computer", and yes I probably have cleared cookies a while ago, but instead of allowing me to send a verification email to my other address, it asks me security questions I set up 3-4 years ago even though I got my password right. Now my Yahoo account is locked for 12 hours.
rant rant rant