They moved my damn buttons.
In a move that can only be described as "mac envy" Canonical has has changed the position of the window control buttons from the right side of a window to the left in Ubuntu. You are probably reading this because, like me, you are none to psyched about this change.
after trying several suggestions part of the instructions here tipped me off.
What you want to do is run gconf-editor (just press alt + F2, type it in, and click OK) then navigate down to the entry for apps / metacity /general / button_layout.
If you are like me, you will want that key to say: menu:minimize,maximize,close
However try as I might, simply clicking and modifying the existing contents of that field never worked for me.
The trick? right click on button_layout, and select edit key. Edit the key there, and click OK. that should change it immediately and you will be all set.