That is a fairly risky move on Microsoft's part but I applaud them for taking it, especially if it works. Every average Windows user I knows notices and complains about the constant UAC popups. What's funny to me is that since 7 has come out, I've heard this a lot less. I believe since 7 got the connotation of being the "good" Windows and Vista the abject failure, people may be cherry picking their complaints to support their assertions that 7 is much better and Windows XP is too old to be a viable alternative.