I agree, not too long ago I was un RARing a "song" with a very long name (long enough that winRAR displayed ... before the extension. This was the 6th of 9 that I was doing at the time so I was kinda in autopilot. Un RARed it, opened the folder, saw a Media Player Icon, double clicked it to make sure it played, and got a UAC popup. Turns out it was an .exe but the file name was long enough to push that fact off the screen. Granted, I should have been being more careful, but UAC for all it's hassles save me that once. no one can be 100% vigilant at all times, and UAC is just one more check mark for me. Now, I will be honest that before SP1 and while installing an initial system (10+ drivers, and 20 - 30 programs), or while trying to troubleshoot something, it's a royal pain in the ass. I usually disable it for those periods of time, but now that everything is up and running, I only get a UAC about once a week, if that often.