On my new clean install, Cortana is actually speaking when it responds. I had the panel lock up when I first enabled the Respond to Hey Cortana setting, but after a reboot it seems to be working better. Many questions are met with "I can't do that until after an update". More use of the App may help its operation. I suppose if I had any advice, it would be to not rush it. Give it time to react before speaking again. Does anyone know if you can set it to use IE instead of Spartan?