Theme's (gnome) terribly wrong

[B-Fly <b.fly.spam.1@hccnet.nl>]

I recently installed a clean gnome (unstable) on my knoppix 3.6 
hdinstall,and the result is just terrible. I selected the gnome simple 
theme, but  somehow this does not change the dropdown lists, menu, etc. 
See also the screenshot at: https://b-fly.homeip.net/images/Screenshot.png

It looks like the gnome windows are a mixture of the gnome simple theme 
and the kde theme.

When running KDE, all gnome programs look how they are supposed to look.

Removing all files in ~/. does not help, neither does changing the gnome 
 or kde theme.

Anybody an idea what's wrong?

Ronald