kde default folders

I just notice that kde (the 10.0 one) uses defaults folder directly at the user root (~), for example ~/.local and ~/.thumbnails I find this specially odd because nobody knows from where these folders come from and this can make collision with others software. it makes it difficult to use alternate partitions. all the kde stuff should be in .kde, as usual. (and on my disk .thumbnail do 640Mo :-() is this feature normal, a carefully studied choice or what? thanks jdd -- http://www.dodin.net http://dodin.org/galerie_photo_web/expo/index.html http://lucien.dodin.net http://fr.susewiki.org/index.php?title=Gérer_ses_photos