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A bit less than three years ago, Windows Vista was officially launched after a long delay. The operating system brought a raft of long-overdue new features to the Windows platform to make it truly fit for hardware of the 21st century. In came a new graphics stack and sound stack, as well as significant security, networking, and storage changes.

The changes were all well and good—the graphics work in particular was essential to allow Windows to offer functionality equivalent to that found in Mac OS X for many years—but they came at a high cost. To take advantage of all the new features required the use of all-new Windows Vista hardware drivers. In the OS's early days, these were often slow, unreliable, or simply non-existent. In spite of the extended development process and lengthy open beta, many vendors were apparently caught off-guard by Windows Vista's release and its preference for new drivers, so they chose to ignore the new OS for many months.

Software vendors didn't fare much better. Vista's new User Account Control (UAC) system meant that most of the time even administrators were stripped of their full privileges, forcing all software to run as a regular user account; full access was only provided after a confirmation prompt. Though software should long ago have stopped requiring admin rights—Windows NT had this kind of security since its inception—the reality was that many applications lazily assumed that the person running them would have full administrator privileges all the time. Take those privileges away, and the programs start breaking.

As for its impact on users, Vista also brought with it higher hardware demands that caused many to recoil in horror. This wasn't a new phenomenon, of course; Windows XP and Windows 2000 before it both had the same effect. So big, so bloated, so slow—these are traditional criticisms leveled at any new Windows release, and Vista was no exception. In truth, Vista's hardware requirements were not egregious; the problem was that in comparison to XP's ancient, five-year-old requirements, Vista's requirements represented a big step up, especially in the area of video hardware.

So when Windows Vista became publicly available in early 2007, the reception was rather lukewarm. Third-party hardware and software support was spotty, backwards compatibility was reduced, and system demands were markedly higher. This led to a computing public that clamored for the continued availability of Windows XP, and many businesses (chipmaker Intel among them) swore off the new version of Windows in favor of its ancient predecessor. This was unfortunate. Sure, the new operating system had teething trouble, but this was nothing new.