I think it is the norm with Vista. I have been running RC1 for several months, and recently installed the retail release so we could get our applications running with Vista. This is the worst OS i have ever used. So far I have turned off Windows Defender (what a joke, I can see having it on a home version so people that are clueless do not mess up the computer, but leave it off of the enterprise version, it is annoying to "give permission" to do anything). In order for all internet traffic to get through I had to turn off the AutoTuning feature (evidently this new "feature" does not work well with Cisco, so Cisco rejects the packets), and I also turned off UAC (user account control, again another dummy feature built into this piece of crap). Again, if this were a home version I could see doing that, but expecting us to turn all this off for it to be an effective OS for business is a joke. We control things like this on a policy level, don't install it by default.
I have a dual Xeon processor machine, that is 4 months old, and the display driver is quirky causes lock ups, the audio driver won't work at all, and it will not recognize an external drive I have attached. I am telling you, avoid this POS at all costs, hopefully by SP1 they will have some of this figured out. They rushed it out and it shows.