Invincible shutdown buttons!
I booted into Vista yesterday to test something. It offered a bunch of updates to install. After they were installed, I got this:
I am not sure what shutdown buttons do when they look like this. I guess they are invincible, or something. Ha, I’m your log off button! You can’t kill me!
Yes, one of the updates installed was the ATI driver update, so I guess there’s some glitch somewhere in the driver update that makes some buttons be displayed like this… But hey, this is not some random driver that I found on the net, it’s the one that is officially suggested by Vista’s update!

Obviously Vista _really wanted_ those buttons to be gold in the first place. Out of curiosity, was the update you installed called the “Midas Touch”?
don’t worry, you still got the other six log off options in the popout-menu… ;)