Sketchy batteries doing bad things to you and your phone are nothing new. Sanyo has set an interesting new precedent, however, turning a good battery bad with software. Some half million units of their W32SA clamshell for KDDI's network are being sent home for faulty software that can prevent the battery from fully charging. That, in itself, isn't too scary -- but here's the twilight-zone part of it: there have been documented cases where the batteries "have cracked and become deformed." From some faulty software, people, written by the US' favorite cellphone manufacturer, no less. Happily, afflicted handsets can be flashed at the local KDDI shop, but our paranoia is getting the best of us here; could rogue KDDI employees send bogus OTA firmware updates to grenade the phone in your pocket?