Hi, not sure this has been reported before. I have my n770 for a couple of months now. Just a week ago, I started to notice the top portion of the frame, around the power button, was bit too warm (hot) in both "Charge" and "ON" modes. At least it seems hotter than before. I further found the battery would not last for more than 10-15mints after charge. Any ideas? I bought it from buy.com and I guess there is little chance Nokia would honor their warranty.