Comment 34 for bug 532224

Tested your theme. Looks good. Not seen any bugs in default ubuntu theme.

But ... found two small problems (Surely more related to metacity bugs) :

If you include a spacer, there is no background behind (Example : maximise,minimize,spacer,close:)
and if you want to show the menu button, it appears with left_left_background.

Anyway, I've played with many buttons combinations and not seen any other problems than those two.