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Premium Member
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Discussion Starter · #1 ·
Apple released this today:

iMac (27-inch, Late 2009) display image is corrupted or flickers

Applies to everyone with a 27" iMac and ATI Card (aka everyone with a 27" iMac):

"The 27-inch iMac Graphics Firmware Update applies to the graphics firmware on ATI Radeon HD 4670 and 4850 graphics cards to address issues that may cause image corruption or the display to flicker."
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