For those of you that are tired of your screen going through all sort of spasms when the UAC prompt comes up (for those that still have it on that is). This little trick will turn off the shaded background that causes the problem.
Open "Local Security Policy" from the Administrative Tools
Select "Local Polices" and then "Security Options"
Scroll down to the bottom of the list where the "User Account Control" settings are.
Find the setting titled "User Account Control: Switch to the secure desktop when prompting for elevation" and disable it.
This will leave UAC active so you still get all the prompts, but the gray "secure" background doesn't appear.
Of course many more conscientious users will tell you that you're now susceptible to having a Trojans/worms automatically clicking the "OK" button for you. My take on this is that if you've got a Trojan or worm that's going to do that then your system is already compromised so it doesn't make much difference.
So if your screen has the jitterbugs, give this a go. Before turning off the secure desktop my video driver used to fail on an almost daily basis, that is now a thing of the past.