I am now experiencing bizare colors for images opened in PS. Colors look normal in Adobe RAW window as well as Bridge, thumbnails and "export to web" window. I have been with Photoshop since version 3 and have never seen anything like this. I don't believe it has anything to do with mismatched profiles or monitor calibration. Everything is set to use Adobe RGB 1998 and the monitor is set to Windows RGB (I have tried the other settings also). When the images are output to web or print they appear normal. (test images are old favorites that have been printed and viewed many times so I know what they are expected to look like)
Images look as if one or more colors are missing entirely. A bright blue sky appears greenish-gray. Other colors are equally distorted. I tried reinstalling CS4 with no success (except the need to download 180 megs of updates for a second time!)
OK, sucess! Downloaded a new graphic driver for my brand new system and we are back in business. Strange that it only effected the open file in Photoshop and not any other graphic.