Vista is not a new operating system (Score 1)

There are many reasons for Vista performing badly with many games: 1) Vista is not actually a new operating system. Microsoft dropped the Longhorn kernel from Vista in favour of a slightly tweaked version of Server 2003's kernel. Server 2003 runs games pretty well (better than XP in some cases) 2) All the extra rubbish that is in Vista interferes with performance. All the DRM, graphical gimmicks and security stuff packaged with Vista, which you can't turn off, adversely affects the performance of the games you play 3) DX10 has to emulate DX9. DX10 is so different from DX9 it has to actually emulate DX9, eating up even more processing power. Not only are you running DX10 on your vista machine, you're also running DX9, which slows things down enormously. In my opinion MS have shot themselves in the foot with Vista. They could have made it better than XP but instead they've bloated it with all sorts of stuff that lets them control how you use your computer. Halo 2 is going to be a big disappointment (paying to play online, wtf is that about?), and I can only hope that this project gets somewhere so I can play all the great new games without having to use an inferior operating system.