Bruno: "And I don't want windows opening in a diferent monitor from the one I'm using"
If both monitors are at hand, no problem. But if the other is a TV in the other room, incredibly annoying?
@Thomas Wright: you won one free internet.
I was thinking the same just about two second before of reading your comment.
This question screams of selection bias to me. How many people who do not use multiple monitors are likely to care enough to read the post and fill it in.
I am using 4 monitor in my work, but tried ubuntu 10.04 and 11.04 both version but none of them give me appropriate output. So i switched to 2 monitor (twin view). I have nvidia graphic in my machine. But they not support Xsession for 4 monitors. I hope 12.04 have some powerful feature to support 4 or more monitors.
And I don't want windows opening in a diferent monitor from the one I'm using
Ubuntu runs inside a VM. The VM manager provides two virtual GPUs.