[Clipart] found broken content

[Ruud Steltenpool, http://svg.startpagina.nl]

These don't give me an image on my screen:

http://www.openclipart.org/clipart/animals/mammals/contour_orangutan.svg
http://www.openclipart.org/clipart/animals/mammals/contour_kangaroo.svg
http://www.openclipart.org/clipart/animals/mammals/contour_fox.svg
http://www.openclipart.org/clipart/animals/mammals/contour_elephant.svg
http://www.openclipart.org/clipart/animals/mammals/contour_baboon.svg
http://www.openclipart.org/clipart/animals/mammals/big_cats/contour_cheetah.svg 


http://www.openclipart.org/clipart/animals/birds/penguin/tux_didier_fabert_01.svg 

http://www.openclipart.org/clipart/animals/birds/duck_yellow_ii_kurt_cagl_.svg

http://www.openclipart.org/clipart/unsorted/media_as_wmd_saint_.svg