Apple released iMac Graphic FW Update 2.0 on Thursday to address sleep, wake and startup issues some users were experiencing.
Firmware update addresses iMac sleep issues
According to Apple’s release notes, “This firmware update fixes an issue that in rare cases may cause an iMac to hang during startup or waking from sleep.”
The update weighs in at 669KB, and requires Mac OS X 10.6.7. It is available via Apple’s Software Update application, or as a downloadable installer at the Apple Support Web site.