I'm using Windows 2000 Professional...So far I didn't have any problems. *crosses fingers*
I also have a Mac running with Mac OS 9...it did freeze from time to time...But since I'm more on my Laptop (Windows) I voted for that.
But I used to be happy with my Windows 3.x, too. I kinda jumped from that to Mac and then to 2000...But my dad has lots of trouble with Windows 98! I can hear him curse regularly. *g*
*pats poor Dad*
~Sira