I use Windows Vista, for me is a very good operating system.
Yes it starts with a paranoid level of security but it can be smoothly tuned down if necessary, I did not because in our days security is to be placed before all.
Also I find absolutely ordinary that Microsoft talks about of the next windows version.
My point of view is that Vista is a break to OS version like Windows 95 was.
Instead I should agree, six months (more or less) are few but we must wait to see whether or not they become sixteen or twenty-six.

Bye,
Roberto