[tikhonj]

On KDE 4.7 (or 4.5+, but there's no reason to use older versions) multiple monitors work exactly how I want them to. It's great.

The only issue is that there is no shortcut for moving windows from screen to screen by default; however, you can set it to be whatever you want from the settings so it isn't much of an issue.

And, unlike OS X, KDE actually has a great full screen mode. I've found that having a fullscreen browser (or two side-by-side) on one monitor and a full screen Emacs on the other is my perfect layout.

[paol]

Apologies, when I said "all" I wasn't thinking of KDE which is actually the only major DE I've never used in a multi-monitor setup. From what you say I should probably try it.