yep. it's on my back-up cpu used for testing purposes only, haven't used it for a very long while.
I use a lot of apps, so i disable UAC whenever i get the chance to. but with others who don't know how with their Vistas, it's still turned on. annoying when i do some favors for them with their Vista laptops/pc.
initially was impressed with the fluidity and Aero interface, but that was just it. My daily OS is still ol' trusty XP!