Theme dissapears some time after logon on v3.4 + KDE

After I installed Knopix 3.4 to my HDD, KDE uses it's standard Theme with the blue background-gradient and the blue, apple like, icons.
But when I first used the Nautilus Filemanager, it killed my Theme and changed all icons and so on.

On Restart and Logon first the old theme appears for a couple of seconds, followed by the new Theme, setted up by Nautilus.



The Problem is: I would like to have the old theme back, as this new one is also present in the gnome-desktop.
Everytime I try to change the theme with the controll panel it doesn't take effect.





Hope anybody has a great idea :)
Thanks

Problem solved!

Just killed Nautilus from Autorun and from now on it won't take effect any more.