I just got my custom configured late 2012 27" iMac. I absolutely LOVE it - minus the small grey blob that shows up against light backgrounds.
It appears that this is the only dead pixel(s) on the the screen. I wouldn't mind if it wasn't in such an obvious location but it's close to the centre of the screen and it's quite noticeable.
What would my options be in this case? I feel I might be out of luck because this is a custom configured model. *sigh*
Thanks so much for reading my post. Any advice would be greatly appreciated.