jones_supa writes: Apple has announced a "replacement program" for European iPhone AC/DC adapters sold between October 2009 and September 2012 after discovering they may overheat and thus pose a safety risk. The affected adapter, model A1300, was bundled with European sales of the iPhone 3GS, iPhone 4, and iPhone 4S, and was also sold separately. By a quick estimate, there must be millions of A1300s in the wild. The specific technical reason causing the overheating has not been detailed (a YouTube video shows a teardown of the device). The A1300 was replaced by an almost-identical adapter, A1400, in 2012, which is not affected by the safety issue. For more details on how to identify the affected adapter, and to arrange a replacement, visit Apple's dedicated portal for the issue.