Those ailing 27-inch iMacs are getting a little fix from Apple, in the firm of a graphics firmware update. The patch fixes flickering and video corruption problems Apple attributes to the ATI Radeon HD 4670 and 4850 video cards. The fix requires Mac OS X 10.6.2.
The new iMac 27-inch model has had a rough time since its launch last month. There were reports of slow performance, complaints about cracked glass panels on the LCD monitor, and then came a flood of complaints about the video performance in the all-in-one PC.
Lately, the 27-inch unit has proven extremely hard to get, with back order delays by as much as five weeks. Apple has not provided any official explanation as to why, but the speculation was it was simply a hot seller, more than Apple expected, and it has to make more.