>By the way, my three prong wall wart that I received
>had a third prong made of hard plastic.
>
>Go figure.

That is required on the UK plugs to move the shield in the wall socket that
is designed to stop baby fingers poking things in. The earth pin part of the
shield is designed that it is needed to move the portion over the other
holes, so any double insulated item such as a wall wart need a dummy earth
pin to do this.

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