Comment 18 for bug 36046

Florian, I think you haven't read correctly my comments.
This file (~/gtkrc-2.0) is created by kde, so if you delete it just before logging out of kde, it will be ok for gnome and xfce.
But EVERYTIME you log in kde, this file is created again as it is a config file.
So, you face the same problem everytime : you have to delete the file if you want xfce to work or gnome to work better (read previous posts for more precisions).
If you have kubuntu-destop (with dapper, of course) installed on your computer, just install ubuntu-desktop and xubuntu-destop and you will see what happen.