WTF is UAC anyways. Is it a security feature or not? 

http://blogs.msdn.com/uac/

"User Account Control (UAC) is a core security feature in the next release of Windows Vista and Windows Server code name Longhorn."

Actually Within Windows has just written about this...

http://www.withinwindows.com/2009/06/10/uac-uac-go-away-come-again-some-other-day/

UAC in its "annoying" origional state was great. At this point I am not even sure Microsoft knows what they want to define UAC to be. I am pretty sure it is meant to be a security feature...