Monitor Calibration Resets After Screen Saver

I have had an odd quirk the last week or so: every time I bring my monitor back from a screen saver, it has a washed-out look. I recalibrated it, which fixed it until the next time the screen saver activated. However, to revert it, all I have to do is select the (same) calibration in System Preferences and it is set until the next screen saver activation. I have tried switching screen savers to no avail. The only clue I seem to have is that I recently had the Nvidia GeForce 8800 GT put in to replace the old, buggy ATI Radeon X1900 XT. This seems to be what is triggering the problem, as the upgrade to Snow Leopard occurred several weeks ago and this problem is more recent.
Details:
Mac Pro (1,1)
Nvidia GeForce 8800 GT
DELL3007WFPHC 30" Monitor
OS X 10.6.1

The bottom of the article said it may help to move all your profiles to the central library location.... might also want to check permissions and clean your system..... I use Onyx. It's just a thought and not a recommendation. You might be right that it's wait until 10.6.2. I use a ColorMunki and so far don't have the issue. Good luck.
Michael

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