/usr/share/pixmaps/kmldonkey.png is in kmldonkey 4:2.0.5+kde4.3.3-0ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/pixmaps/../kde4/apps/kmldonkey/icons/hicolor/32x32/apps/kmldonkey.png