What jomifl is getting at is that these are examples of "natural evil" (which is a bit of a clumsy term, but it's useful enough - can't remember where it comes from).
Basically, if one believes that there is a benevolent god that designed the universe, then you are forced to accept some pretty horrible things as part of this design. The conclusion is that the world simply does not look the way it would look if it were designed by something benevolent and omnipotent.
In addition to the example I gave in Naomi's thread, I'd like to add this little fella:
http://en.wikipedia.org/wiki/Naegleria_fowleri
Meet N. Fowleri. It's a very rare amoeba that lives in some water sources, and if you get it inside your nose, it will climb up your olfactory nerve and devour your brain. You're symptomless for about a week, then dead within three to five days.
It's killed its fair share of followers of Islam, as cleaning out the sinuses is a common practice in ritual ablution. It also killed a little girl who was swimming in the UK in the 1970s.
Where exactly does this feature in the design of a benevolent creator?