Back in 2008, the Japanese Trade Ministry identified 3 reports of fires that were caused by overheating iPod nanos. An investigation followed and Japan's Ministry of Economy, Trade and Industry found a total of 34 incidents of overheating that could be attributed to the lithium-ion battery used in those nanos. Issues ranged from discoloration to, in rare instances, fires. As a result, Apple agreed to replace defective units in Japan. That program went into effect this week.
Anyone who bought a first-generation iPod nano between September 2005 and September 2006 in Japan can get it replaced if it overheats. Note that only the original nano was affected. If yo