Comment 11 for bug 735393

I get this in unity in a fresh installation of natty under VirtualBox. Ambiance loads and stays working for about five seconds, and then the theme half-resets to what looks like Clearlooks. The title bars remain as Ambiance. If I run the appearance manager, it thinks I have a custom theme setting; if I change it to Ambiance, it makes no difference, and when I next run the appearance manager it thinks again that I have a custom theme set.

The only extra applications I installed were virtualbox-ose-guest-x11, -utils, -dkms, and the dkms package (which are required for 3d support to get unity working).