Apple recently released two firmware updates that address graphics problems in the iMac and select MacBook Pro models.

The iMac update fixes a graphics issue in Lion that would lock up the all-in-one machine, while the MacBook Pro update targets 15-inch, late 2008 models with a flickering display. Seems like Apple released the iMac update in August, but it apparently showed up again yesterday. You can view the details on Apple’s support website.

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