Mac osx lion screen texts and graphics jitter/flicker during scrolling

Hello,
I have recently upgrade my macbook (late 2008, the only aluminum Macbook model) to OSX Lion, and the screen scrolling is causing fatigue to my eyes as the texts and graphics jitter/flicker even at the slowest scrolling speed setting. This problem causes serious discomfort to reading long text on the screen that requires scrolling.
Have anyone experienced this problem? Is there away to make the text scroll smoothly without jitters?
Thanks

HI PAT:
HAPPENING to anyone that has the old Acrylic Cinema displays that use the ACD-DVI adapter.
unplugging the adapter and replugging solves the issue bu it only last for one session if you reboot the flickering comes back so you have to unplug and replug again. is a Pain in the B.
lot of people complaining about it. https://discussions.apple.com/message/16357859#16357859http://
Hope this helps
AppleLou

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