To put it simply, as an IT professional, and after having attended numerous informational and technical seminars on Vista, as well as having played with it myself,
I will not be encouraging my customers to switch within the first year of Vista's release. Vista is primarily eye candy and offers few technological or functional reasons to switch from Windows XP. It is unreasonable in its requirements for business purposes, and obsoletes many machines which are fully capable of running Windows XP.
The basic edition of Vista is basically Windows XP. I will admit that Vista contains many attractive possibilities to IT admins, but not enough to warrant what is required to move.
My personal objections lie mostly in the realm of DRM. I don't think I need to go on a diatribe about this as most of my audience is technically savvy enough to already know the arguments against DRM. To be brief, DRM is a broken method for controlling the demise of a broken business model.
End of line.
