Having the same problem after a fresh install of 10.10 on a new computer. In gnome-appearance-properties, the theme is right (ambience), but in the rest the theme is the Gtk standard theme (a.k.a. the flat ugly one). Starting gnome-appearance-properties only prints the following:
(gnome-appearance-properties:2095): Gdk-CRITICAL **: IA__gdk_display_sync: assertion `GDK_IS_DISPLAY (display)' failed (gnome-appearance-properties:2095): Gdk-CRITICAL **: IA__gdk_display_sync: assertion `GDK_IS_DISPLAY (display)' failed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/395871 Title: Appearance preferences are being ignored -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs