Burn Baby, Burn!
Bought cheap non-OEM replacement batteries from Ebay? read this!exploding thinkpad.
*Note* Original article says they were third-party replacements, maybe a lesson in using non-OEM manufactoror replacement batteries! Apprentlty the batteries were purchased from ebay and the seller has not yet returned any contact...
"Fire! Real Fire! Call the fire brigade now!"
Thinkpad explodes @ LAX - ignites bomb scareThis one from engadget