I have a MBP and a 20" ACD (bought yesterday). I calibrate my MBP using a Spyder Calibrator. Yesterday I decided to calibrate my ACD using my Spyder. All I do is through System Preferences is relocate the menu bar from my MBP to the ACD so that the Spyder software will run on it and then run through the process of calibrating it. The only issue is that when complete it totally screwed the calibration on my MBP and if I recalibrate the MBP then the ACD calibration screws up. Should I just leave the ACD on it's default "cinema" calibration? Anyone know how to remedy this? Thanks.