Hi, My wife was using her I Pro when all of a sudden the button stayed pressed in, it got so hot she had to throw to the ground whereas the button finally disingaged. It seems her I Pro button never worked properly since she got it in Nov 2011. It never seem to protrude out as far as my Buzz. Anyways it's completely dead, no light in the wheel, tried many charged batteries, with no luck. I was told it's probably the PCB. I'm just wondering if anyone else had this problem. BTW my wife vapes less than 2 mg per day...She is a very lite vaper. I'm not sure if we will get it fixed or buy another one. My wife is pretty scared to get another I Pro or any PV. She been hitting her Ego and feels like it's safer.