Anyway, you can easily change it.
* install gconf-editor
* navigate to /apps/metacity/general/
* find button_layout and change it to whatever you like
The key to the positioning of the buttons is the colon. I went with:
:minimize,closebecause I don't really care about maximize. Everything to the right of the colon is floated right.
Another tweak worth considering if you're a keyboard shortcut person is rebinding "Key to show HUD" in the Keyboard config screen. That is the one which, if your experience is anything like mine, is capturing your keypress when you try and alt-tab around.
Since 12.10 it seems the gconf-editor setting is sometimes ignored. You can move everything by running this on the command line:
sudo gsettings set org.gnome.desktop.wm.preferences button-layout ":minimize,maximize,close"