I've had my Hero for a few months now and it has been wonderful. However, the other night, the phone wouldn't charge all the way, so I unplugged it, restarted it, and charged it and it charged up to 90% through the night. Last night it only charged up to about 50% give or take. This morning at work, I plugged it in and instead of charging, it got extremely hot and then it died. This afternoon, I took it to the Sprint store and they put in a new battery and the phone worked again, but it got REALLY hot again. I took it back in and they looked at it again and said the phone has definitely got a problem and the cause of this is water. It has been raining, but I don't recall ever having any water get in the phone - just the occasional rain drop hits the screen and I wipe it off. I never keep it out in the rain. They are saying I'll have to do an insurance claim to replace it because of water damage. They say there are 4 water marks in the phone. I find this so hard to believe and don't like that they want me to spend $100 on a new phone. Any opinions or ideas?