Generally speaking, i am not really a big supporter of the Windows operating system. And most of the time, i wait to see and try something to get an opinion on it. But after seeing these three reports against recent Microsoft products (two on Windows Vista, one about Office 2007), i will certainly wait a little before even trying them, at least until the already planned (scheduled?) Service Pack 1 will be out (at least for Windows Vista).
I will not say much about it right now. Go reading the reports to get an idea of what frightened me in the first place, if you care: