You probably remember this post about some patches leaked that were supposed to improve Vista performance within other things. And I know that you are probably waiting for somebody to test them in a UMPC. Well, I did it.
I have not noticed anything positive neither negative. My benchmark tests have not changed so I can't say that these patches improved the overall performance of my Q1. The time coming back from standby or hibernation still the same. It takes the same time to turn on the device.
This does not mean that these patches did not do anything. They just did not change the performance in any way.