I say work in progress. If everyone will recall. They also said XP was crap when it came out. And I think it was too. Now I use XP religiously. I also am setup on a dualboot Vista Ultimate, XP Professional system. I think given time they'll iron out the faults in Vista and folks will learn how to disable the DRM in it and be perfectly happy. Some will use it blindly, never knowing about the DRM or what it means or does. I believe the DRM on Vista is a service called Software Liscencing service which I checked into some and what it amounts to is if Vista phones home using Software Liscencing service and MS doesn't like that you have killed so many services or just some of your basic ripping software, or decoding, or encoding software, or they just take a notion and say "This user has WAY too much copyrighted music on his pc along with WinMX (strictly for example). I say we send a shutdown." Software Liscencing allows them the ability to remotely disable your operating system negate your Windows setup. And since the boot for Vista is written into the MBR(master boot record) of the drive, making formatting it a useless workaround, I believe it perfectly capable of doing so and forcing you to either purchase a new drive to reinstall it or seek MS as to why it is no longer working.
As for the 915 intel boards, of which I happen to own one, it is definately true there is no working Vista vid driver for the onboard Intel based video. I have had mine for a year or more and however long it's been since Vista's release there is still no working video driver for it. Only difference in mine being is it wasn't marketed as a "Vista Capable" board because I bought my board from a local pc builder company out of their private stock that they used for building pcs. And unlike XP, Vista disabled the onboard video as a result of incompatibilty where XP would've installed some sort of plug n play drivers to make it work.