You are right with this , The only thing I have learned about ms is this , once you know an os throroughly , they bring a new on on the market and you have to start over again .
So I do it the easy way now .Before I would search for days to resolve a problem now I simply replace my system by the image of 5 -7 days before , after saving my mail folders .Yesterday I missed two of my three cds after setting up sb3.0 . I first tried to roll back drivers,uninstall sb30 , then system restore , but they were still missing . Then finally I had to put back my image and my cds were back , and I use the energy to find out why my cds were gone for something else .Lol