Apple's laptop batteries are once again feeling heat after one MacBook owner's laptop caught fire, apparently stemming from the battery. According to the user, the laptop was charging at the time but not in use (asleep with lid shut). Last summer, multiple PC vendors (develop Li-Ion battery standards. Apple has historically used Li-Ion batteries in its iBook and PowerBook laptops, but has opted for Lithium Polymer batteries (Li-Poly) in its MacBook and MacBook Pro computers. One of the supposed advantages of Li-Poly batteries is reduced combustibility. While the incident is certainly disturbing, it is unknown how widespread the issue is. Currently, there are no safety recalls affecting the MacBook or MacBook Pro, and Apple has yet to respond to the incident.