Starting on Oct 10th Apple will be replacing power adaptors that came with all iPhone 3Gs bought here in the United States but also Japan, Canada, Mexico and Several Latin American countries.

Apple has determined that under certain conditions the new ultracompact Apple USB power adapter’s metal prongs can break off and remain in a power outlet, creating a risk of electric shock.  We have received reports of detached blades involving a very small percentage of the adapters sold, but no injuries have been reported.

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