I have a MBP, 17 inch i7. I have it set to use the 330M full-time, by unchecking the option in the energy saver preferences Ever since 10.6.5 was installed, the 330M is being throttled, much like if the MBP was dynamically selecting between the Intel graphics and the 330M based on the graphics workload. So, for example, if I bring up dashboard for the first time, the animation is a little jerky, but after that initial time the animation is smoother, as if the 330M has been turned up by the operating system informing it that more horsepower is required. After a few seconds however, if I again bring up dashboard, the animation is jerky again. Similar patterns can be observed with expose and other graphics-intensive operations. I find this annoying - I want the 330M running as it was in 10.6.4 - everything smooth, all the time. Any way to fix this? I tried the macgfxswitcher app, and it doesn't fix the problem, as the issue isn't with the 330M not being used, it definitely is, it's with 10.6.5 throttling its performance.