Today Apple announced the Apple Ultracompact USB Power Adapter Exchange program.
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.
The ultracompact USB power adapters were supplied with every iPhone 3G sold in the following countries, and may also have been purchased separately as an accessory.
If you have an ultracompact adapter with a green dot on the bottom, you already have a new, redesigned adapter and do not need to participate in this exchange program.
Replacement adapters will be available starting Friday, October 10, 2008.