Hi, I just bought a 30" mac display to work alongside my 17" high-res macbook pro. When i don't have the displays mirroring each other, the text on the external display is perfect, however, when I do 'mirror' displays - there is a noticeable blurriness particularly with regards to the text. Is this something I am stuck with? Or is there a way to match the sharpness of the 'non-mirroring' option? Thank you in advance for your help. ps.oh, i have obviously tested every setting in system preferences...and no luck. I tried changing the resolution on the Cinema Display from 2560 x 1600 to match the 1920 x 1200 of my MBP and frankly - no change at all, which i thought was odd.