I've not upgraded yet, either. I'm on 14.2, like you, but I have experienced freezing. I've had my PB 360 for around a month now and I've had to reset it using the reset button four times. That surprised me, because I haven't heard anyone else complaining about that.
I'm not complaining at all. I LOVE my PB 360 and would certainly recommend them to everyone.
I'm interested to hear the answer to your questions.