Talk of limitations on virtualization and media playback combined with hardware and software compatibility problems are making Vista look very bad in comparison to even Windows XP. Of course some of these issues might be addressed over the next few months but I think I have three good reasons why Vista is making for the bottom faster than you might think.
The current situation with Vista is sad, in my opinion. We had all hoped for an amazing version of Windows, but so far it’s been completely lackluster. The top reasons Vista is annoying as mentioned on this blog include poor driver support, virtualization issues and of course… DRM.
Source: I Love Digg Blog