Oh boy, let's see...
I don't know which Ubuntu you are talking about but the three machines that I run don't have any problems that they wouldn't have under (or because of) Vista. And I can maintain all three free of cost. ... Just because it doesn't fulfill your expectations doesn't mean it's not a good desktop. Windows doesn't fulfill mine ... so what do you say to that?
I ain't saying nothin'. It's the users the ones who are doin' the talkin'. Ubuntu is buggy. Period. The fact that Vista, or any Windows for that regard, might be buggy too, does not invalidate that perception.
Correction: It's a FREE Ferrari that outruns the MS Ferrari at many many occasions and you don't have to buy a special screwdriver for thousands of dollars to open the hood. What is KDE then? A Lamborghini in first gear? Same here, they do a lot of stuff but it has it's problems too.
Don't compare apples to oranges. Compare Ubuntu (a distro, or a complex of distros) to other distros: CentOS, PCLinuxOS, LinuxMint, Mandriva, OpenSUSE, Slackware... you get the idea.
I stand by my point. Putting a slow, buggy distro with a GNOME frontend = big mess. I've seen that before (summoning Red Hat Linux versions from the dead...).
You might get a decent implementation of GNOME on another distro, who knows... (Debian, perhaps?). You might also get a good, stable distro who also happens to be very fast (Vector Linux).
But these two damning factors (GNOME and a slow, buggy linux) are present in Ubuntu and this is a trend that is only going to get worse as far as I can see.
Having that handed out as a flagship Linux desktop is like having a Ferrari in first gear.
btw, want a decent Linux desktop and don't want to use KDE? Great, just use XFce, which is a great desktop too.
So, who is the fanboi here...? ;-)