Round two of teething trouble with Apple’s new ‘unibody’ MacBook notebook computers is drawing to a close as users install a second firmware upgrade to address hardware hassles.

The 15 in. ‘unibody’ MacBook, released earlier this fall…

Apple released a patch yesterday designed to fix unspecificed problerms with the system management controller (SMC) which oversees many of the notebooks’ functions. Apple declined to explain the problems in detail, saying only that the new patch would ‘improve the stability’ of effected systems.

An earlier firmware update addressed problems with the new MacBooks’ new glass trackpad controller.

Visit the Apple downloads site to see if your new MacBook is affected and, if so, download the patch now to ensure a happier holidayy season!