I have always turned off UAC on my PC's because I'm not a total idiot and know how not to f$%# up my computers. That being said, for some odd reason whether it's a random Windows Update, Microsoft Security Essentials, or just a fluke, my current main rig installation will not allow me to turn it off and keep it off. After a reboot, it resets itself to the lowest setting while still being on. It's annoying because I don't always think about it so I'll go to do something simple like look at the properties of a file located on my server and a UAC window will pop up warning me these files may be dangerous. WTF!? On a side note, Windows 7 until I can't survive in todays world any longer. Tried Windows 10 on a spare quad core machine I had and while performance was fine, the general feel of the Metro UI left a lot to be desired. That combined with the fact that they keep relocating simple settings or options makes it an annoying thing to even bother to learn a new OS when Windows 7 works like greased lightning.