If you've got a Panasonic digital camera and you're using a third party battery pack, DON'T UPDATE YOUR CAMERA FIRMWARE. Your battery will get locked out by the authentication scheme Panasonic just implemented.
Panasonic claims that they did this for safety reasons, and from the horror stories of batteries exploding in phones that have really cheap third-party batteries, we're apt to believe them. But you have to ask yourself, do you want to save $30 or do you want shards of plastic in your eye? The choice is yours. (And if you choose $30, don't update your firmware.) [Panasonic via Slashdot]