I’ve got 2 complaints with Vista, that are really inexcusable.
1. No OpenGL support. OpenGL (Open Graphics Language) is a largely unregulated, but very powerful and common approach taken by gamers and by workstations. AutoCAD, OrCAD, Doom, Quake, AutoCAD Inventor, AutoCAD 3D and Photoshop, to mention a few, all use OpenGL.
To intentionally drop support for these programs that are ESSENTIAL to several classes of industry is to sabotage your customer. Imagine the startup where a man invests his retirement to buy new machines in the hopes of realizing his dream - only to discover that his dream is doomed because Microsoft abandoned OpenGL without warning, notice or a disclaimer of any type.
2. Same game, same hardare but different Operations Systems have shown that now only does WinXP perform faster, it also is less prone to system errors. So, buy a new game for your $2,500 PC and you’ll find that this machine with VISTA plays your new game slower than your 3 year old PC. This is not an upgrade - this is theft by deception.
What on earth are you talking about? OpenGL is right there on the box. The screensavers use OpenGL for Pete's sake.