Apple released iMac Firmware Update 1.4 over the weekend to address ATI video-related stability problems some iMac users have been experiencing. The update corrects system freezing issues in iMacs with the ATI Radeon HD 4850 video card, and also fixes Boot Camp wake-from-sleep issues. The update requires Mac OS X 10.5.6 and is available as a free download at the Apple Support Web site.
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