Just got a second ACD 30 (from refurb store). Noticed that my original ACD 30 (bought new in March 2009) has a reddish or pinkish cast compared to the new one. The new one looks "normal" meaning white looks white, whereas on the old one white has a reddish / pinkish cast. Calibration is unable to solve the cast issue. I remember hearing something about this problem in the past, but thought it was just the ACD 23s. Anybody with two ACD 30s have an issue like this? Thoughts? Should I take it into a store (about 3 miles away) or contact AppleCare and ship the monitor. Both monitors are under warranty. Thanks for your help/advice.