A month is nothing. And it's your desktop right?
Come back to me when you have multiple webservers and a 3000 user NFS server running off your box. Then when 500 calls / half hour of downtime come across your desk.
You probably don't put your desktop box through this, so probalby don't care whether your system would perform well in this or not, which is what I said.
Seriously, I've worked in big industry. The industry defenition of stable and the power user definition are rather different.
I would claim that Windows XP/2000 (and probalby NT4 though I've never ran it on my PC) easily match the stability needs of the power user. But I wouldn't want to run our Oracle servers or NFS servers on a Win2000 box. No offense to microsoft, after all Unix has been around 3x as long as Windows, I have full confidence that by the time Windows NT has the maturity and install base of Unix it will be right up there in quality.
Also one problem that people like to overlook is the quality of Admins. Unix System Admins tend to be very competent people, and while I have in my life met many excellent Windows System Admins, the sad fact is that there are tons of incompetant oafs out there calling themselves Windows Sys Admins. And in many ways I personally think that some of Microsoft's reliability image comes from the fact that alot of their stuff is just "too easy" to set up, and you end up with idiots that have no business running a big shop doing just that.
Don't get me wrong, Windows admins are not all incompetant fools, I've met some good ones, and they can set up some nice windows systems. But there are lot that are fools, and through their ineptness they can give the apperance that Windows is flaky.
This is just a theory by the way.
But seriously, whether or not Windows will run fine on your desktop for a month is not what I mean when I say stability. But the kind of stability I'm talking about probably isn't very relavant to you.
Honestly, I'm quite comfortable with Unix and Linux, I use them as much if not more than Windows. But I don't think that there is a lot to be gained by switching your desktop to Linux. I haven't, though I could if I needed to.