You know what's weird. Even though the drivers fix my pulsing problem, I still have that problem with the "flash" just before opening any media (avi, mpg, quicktime).
I reported it a couple places before, and others noticed it too. When you open a video, about 25% of the time the screen will quickly/subtly "flash". It looks exactly like the pulsing problem, but is very quick. If you already have one video window open, then the flash wont occur if you open another video window.
I am surprised that it still happens with the new drivers since it looks SO much like the flicker problem.
Also, my temps are still rising. Now 52C idle with the new drivers. Nvidia must have increased the voltages or something. Almost back to 5800 temps