XFWM4 is HIGHLY unusable in this area. Openbox and metacity (not sure about
metacity but I think yes) behave so much better.

Let's say you have two windows. one you write sth and one in bg and just above
and you wanna scroll the bg window to see what you should type next. you move
the mouse over the bg window contents and you roll the wheel to scroll. XFWM
misbehaves and raises the bg window and gives focus to it when I just wanted to
scroll. This compared with Openbox and metacity is sooo bad

The same holds with moving the window. let's say I want to move a bg window. I
click on the titlebar and hold down the button and move. Openbox is smart enough
NOT to give focus to the moving window unless mouse-release happens (and if
window was not moved it gives focus). so this allows to move a bg window without
giving it focus which is also good if you have a bg window as reference to what
you should type/paint/think next in the current window (where you work etc)

I could not run svn because I was not sure I could stand to see this UI bug
unfixed in svn :) :)

now I"m running openbox and not xfwm4 in my XFCE but that looks ugly but at
least it works until those 2 Ui bugs are fixed