Anyone else notice their Storm heating up when on a car charger? I typically put mine on a USB charger at work, wall charger overnight, and car charger when on trips (particularly when using VZNavigator). The behavior I've noticed when using the car charger is that it will indicate that it's charging for ~ 20-30 minutes, then the charging icon goes away (even when it's not fully charged) and the battery heats up.

Anyone else see this happening?