is a windozes OS ever ready?
Given that Windows NTx (as in NT4, 2000, XP, 2003, and later) evolves through service packs in the same way that Mac OS X and every UNIX variant does, and they are all arguably as good as each other overall (each with its own advantages over the others), I think you're being a tad biassed to the point of pure MS-bashing.
But this release (sry, open to beta testers only now) seems fairly stable (in a sort of win95 way)
Considering it's a public beta test, you're once again being biassed in your implication that it is somehow 'secret'. I don't know anyone whose opinion I trust regarding Windows who is trying the XP SP2 beta, but the general opinion I have heard is that it does good things for WinXP.
I personally prefer Windows 2000 to XP, I think it is a more mature product. My parents' machine has XP on it as the Luna GUI is better for their aging eyes than any scheme I could contrive using previous versions of Windows.