I'm observing a strange behavior: With PS CS3 i could just drag an image from
the laptop monitor to the external Eizo and the color would adjust instantly, with
consistent color (All monitors calibrated, no settings have changed). The same applies to Lightroom
2.0 too. Now when i do the same move with the same image opened in PS CS4 the color does not
adjust to match but stays the same and the result is a oversaturated image on the external monitor.
Any thoughts? Thanks, Mark

It should adjust to the display the same as CS3.

Have you tried turning off OpenGL image display?
(it could be a bug, or a driver issue)