The new Ubuntu "Light" Radiance theme comes with the minimize and maximize buttons inverted. I have edited the original Metacity theme to put them back ("minimize-maximize-close").

Since I only had the .png files I did my best but it's not 100% perfect. Still, I think it looks just fine:

To install it, extract the archive and copy all the files to /usr/share/themes/Radiance/metacity-1, overwriting the original files (make a backup first) - note: you must open Nautilus as root for this: enter: "sudo nautilus" in a terminal. Then change the Metacity theme to any other theme and then choose Radiance again to apply the changes (kind of like a restart of the theme).

To order the buttons "minimize-maximize-close": enter this in a terminal:

gconftool-2 --type string --set /apps/metacity/general/button_layout "menu:minimize,maximize,close"

Download Ubuntu Radiance Min & Max Back To Normal Metacity

Update: and here is Ambiance fixed too.