I made a few experiments on firefly extermination and the simplest (and most effective) way is just to rely upon Lux build-in functionality.

About UAC: I did hate it passionately till the day in which, browsing a site (totally unrelated to computer graphics) I got its request for running an application; it was a virus trying to enter into my computer...

UAC is not different from running UNIX as non-root and su-ing when required.

GIMP 2.7.4, Inkscape 0.48, Genetica 3.6 Basic, FilterForge 3 Professional, Blender 2.61, SketchUp 8, PoserPro 2012, Vue 10 Infinite, World Machine 2.3, GeoControl 2