Vista is joining to my MAC tree, and I dislike (not hate) that tree.
For example, vista can't play many games, can't run many programs but i'm sure those bugs will be fixed. It also seems to run slower and it uses up a lot of RAM.
I watched a video showing how similar it is to Apple's Mac. (i think Mac OS X).
Maybe that's why it took a short time to produce, Microsoft ran out of ideas so they had to copy Apple...
I am not sure this is entirely true though