Nokia have announced a product recall of around 14 million AC chargers for their phones. The products affected are the AC-3E, AC-3U and AC-4U models, built within a certain time-frame. The potential fault would see the plastic casing working loose and separating, exposing potentially live wiring inside. Full details on the affected units and how to obtain a free replacement can be found at chargerexchange.nokia.com.

Nokia's Press Release on the subject says:

During a routine quality control process, Nokia identified a potential product quality issue with certain chargers manufactured by one of its third-party suppliers. The plastic covers of the affected chargers could come loose and separate, exposing the charger's internal components and potentially posing an electrical shock hazard if certain internal components are touched while the charger is plugged into a live socket. Nokia is not aware of any incidents or injuries related to these chargers.

The full release can be found here.