Color profile trouble

Hello,
I've developed a new problem. everytime, after another user uses my Dual quad G4 1.25, the color profiles are messed up. Not only does the profile switch, but it is not possible to change it back. I just get a error sound when I select other profiles (in displays preferences), and the profile does not change. I must log out or restart to set it properly.
This becomes system wide when it occurs (everytime another user logs into their account). No matter what user I then log into, I can not change the profile. Also, curiously, the profile is correct at first for a second when I log into my admin account after the other user is done.
Any light on this one would be appreciated. It is a pain to restart each time.
Thanks,
David

I had the very same problem and found that if you execute this
/System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/C oreGraphics.framework/Versions/A/Resources/DMProxy
once in Terminal it fixes everything till next login.
Powerbook G4 1Ghz   Mac OS X (10.2.x)  

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