Has anyone experienced this??? We have two C300's (one PL the other EF) where the cameras resets itself, and loses all of the custom settings loaded onto the camera. I've found (through vigorous searching, frustration, beating my head against the wall, then finally reading the Op Manual) that the cameras internal battery charges every time that it is plugged into house power, but our C300's are rarely plugged into house power!!! So My ultimate question of the day is: Other than keeping the cameras hooked up to house power, what would YOU do?