Don't forget that all the real technical improvements due in Vista were stripped out one by one as the time slipped; what Vista truly boils down to is a dummies OS with draconian DRM to pander to the movie and record industy (and proof of that is the reventing of Vista from running in a virtual machine; it was found that when ran that way, all the DRM crap failed to even initialize), and nore dancing doggies & MS Bobs to eat your resources. ANY OS that can gobble a gigabyte of system RAM just to support the funky eye candy is poorly designed. Most of the sales numbers M$ quotes ignore the fact that the corporate customers almost one and all paid a premium to not have Vista placed on their ordered machines, and chose XP Pro instead. So take that so-called 100 millions units sold number and strip out all the corporate purchases, and you are closer to how many actual units people have bought....and if you strip out those who bought pre-installed, then the actual number of upgrades sold is downright bleak. Particularly for what was supposed to be the OS to end all OS's. Vista is the NT version of WinME....but Redmond didn't have anything to shift people over to. Windows 7 had better be as vast an improvement over Vista as XP was over WinME, or M$ might not survive in the style they expect.