Again, it's not just about "features" per se. But more significantly, it depends on what people's expectations are.
It's like this:
You see a _____ (insert your favorite sports car here). For argument's sake, let's say you like Porsche. You see a Porsche. It has some "features". But it doesn't drive itself, doesn't have all the toys that the concept model had, and it needs some attention like changing the oil, fixing the brakes, checking the tranny, replacing hoses on occasion, etc. And you stand there and say, "That's a crap car, it doesn't do _____ like they said it would. And I have to put up with changing the oil. And it sucks more gas. That's crap".
I'll take the Porsche, you can drive your Chevy
Now, don't argue the example, look at the point. It's similar to Vista. People expect the world, and expect it now, and expect it to be perfect somehow NOW. Even Porsche's, Chevy's and others need some fixing now and then and don't do everything
Vista is the same. Yes it is an improvement. No, it's not perfect. Yes, it has bugs. Yes, it will take time to make it better. No, it doesn't drive itself. Yes, it needs "fixing" from time to time.
Similar analogy.
Do I like Vista? Yes. Does it have problems? You bet it does. Are they deal-breakers? Depends on your situations. So it's a question of whether an individual can put up with some teething problems in the meantime. If someone wants smooth running without a hiccup, get a Mac
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Or stick with XP. But if someone wants that new car called Vista and is willing to be patient and exercise some prudence in "breaking it in" then they'll probably be happy with the results.
Like I said, it depends on the person. Vista is neither a huge success nor failure right now. It's simply a new product that requires people to evaluate their expectations and needs. It's great for some, and not for some. Depends on each situation. As time goes on and bugs are fixed, it will likely prove more tempting to switch. For some there will never be a reason to switch. It's a question of perspective and intent. And that, dear Grasshopper, is subjective for each person.
![Wink ;) ;)](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)