Clitching H264 Playback on 2nd monitor - 17" MacBook Pro/NVIDIA

I have used Keynote professionally for many years, and often use H264 compressed videos (that I have created in After Effects). This has always worked very well until the last few weeks when I noticed that every now and then there is a glitch in the playback of H264 movies when a 2nd monitor/video projector is attached.
Glitch description: A completely random flash/breakup of the image that lasts for single frame - similar to the old flash frame you used to get when playing back MPEG2 movies in PowerPoint. This does not cause the video to stop playing, but is annoying when using it in a profesional presentation. It is also completely random and occurs at least once a minute during playback. This only occurs on the new MacBook Pro's that have the NVIDIA graphics card. It does not occur when using the laptop's LCD display only - ie: no 2nd output used. It does occur on the laptop's LCD if a second display/projecter is plugged in. This does also not occur on my ATI equiped MacBook Pro 15" or my G5 or my iMac.
It appears to be a problem with the NVIDIA card.

hi!
i got the same problem with the 15 inch 2.4 Macbook Pro and
Digital Cinama Display through Final Cut Pro.
Looking like a NVIDIA driver problem - hoping for leopard............
joe

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