The bigger picture here is the amount of un-patched systems out there at all levels. Microsoft resources would be better spent making sure "all" users aware of updates and services packs. All of the PC's that i give free 24/7/365 telephone support (you know the ones, family and friends), those users are not aware of how important it is to keep Windows regularly updated, and probably not even aware that you do.
Ok, end of minor rant :o) I know this is heated and all comments welcome. My concern here really is stopping the influx of viruses coming through mine and yours inbox and destroying data, stealing personal details and generally causing havoc.