Mac Rumors reports that Apple today released a pair of firmware updates for 2007 and 2008 models of the MacBook and MacBook Pro, addressing an issue with the machines not charging properly when used with the new "L-shaped" MagSafe power adapters

This firmware update addresses an issue with certain MacBook and MacBook Pro models from 2007-2008 that prevents them from charging with new power adapters.

  Firmware Updates Address Charging Issues With 2007-2008 MacBooks and MacBook Pros