I'll bite. I work for one of the largest fortune 500 companies in the group that oversees IT security, standards and process, and business controls. I was very recently indirectly involved with the team that's evaluating Vista for internal client rollout, and I helped a friend on that team "test drive" the OS for a few days, and I've read several of the reports and recommendations they've produced.
I've never seen anything more bloated or incompatible than Vista. Not only does about 1/3 of our deployed machines not meet the Vista specs, but those ranges of platforms it was tested on barely worked as needed. It used more RAM than our current client platform based on XP SP2 for doing what tasks it could. Half of our applications would not work on it, and will need to be updated (insanely high cost). It crashed much more frequently than our XP clients, which was NOT due to lack of knowledge or bad programming for our in-house applications. My friend and several other testers whom I know are also gamers and have been trying Vista at home, their universal response to my question on this was that they still use XP and will keep using it for quite some time, mostly due to stability and compatability.
Of course I am not at liberty to specifically cite any figures or details due to confidentiality, so people can disregard this as they will. I will state however that my employer will NOT be spending any large sums on Vista or rolling it out anytime in the near or foreseeable future whatsoever.
This is also in regards to an enterprise setting. My and other's experiences that I can account for are all in line, that Vista is heavily bloated and unstable by people who actually understand the OS and are "power users". Normal daily users like Husar will often have different experiences, however I would equate this to someone buying a Ferrari Enzo with some severe mechanical problems, and then driving it like a Honda Civic and claiming that it's perfectly fine.
Cheers all
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