I was on the Vista beta testing team, so I have been playing with different flavors for the last year.
The only thing I have left to resolve, is my VBA programming issues.
They did not even have the major issues resolved with Visual Studio 2005 (VS 2005) until "Release Candidate 2" I was on the beta team for VS 2005 SP1 and they asked us not to test it on Vista. Good luck with that.
I have no intention of "upgrading" to Vista until the beta wrinkles have been worked out (maybe in about 6 months).
I'd say longer than that. If you follow the XP path, the real system was not out until a new CD was released that included SP2. That was over a year after first release.
The fact that they cut off kernal access (the O/S foundation) seems hopeful about slowing down hackers, but that is also at the foundation of software incompatibility. McAfee and Symantec were whining about this because their programs operated at this level, the same level as the worms, but if the worms don't work, they don't need that access anymore either. A better antivirus program, Eset's Nod32 works fine on Vista.
Adobe CS-2 works fine. Norton Ghost 9 and 10 do not work and there is no fix in site. The good news is that Rad Pro Calculators works

.
I get Vista Ultimate for cheap, but I am not using it every day until the second CD comes out, (next year?) My advice is, you only want Ultimate if you do go for it. I had the most problems with the other flavors during testing.
BTW, suposedly the new Excel is multithredded, which means that it can use both cores of a dual core rig, to think faster.
I've never had an Excel calculation that wasn't instantaneous. I can't see the need unless you have a VBA application with the search loop from Hades embedded.
Most people don't buy a REALLY REALLY high end computer, and upgrading an 'old' computer is almost asinine.
Not necessarily. I just did it. All that it took was a new motherboard, CPU, memory and a new box to fit it in
