If you think about it, the argument from evil is more of a problem with the cogency of a concept of God.

If I invented malaria in a laboratory and released it on the world, the only difficult moral question is what way of killing me wouldn't be too nice.

God does the exact same thing (under a creationist model) and he is still considered, "good." Thus, either we infer that I'm morally entitled to kill millions of people, or that when we say God is "good," we literally have no idea what we mean by it.

And for the idea of the devil created disease, or some other such cop-out, the issue is that God allows its continued existence, which would imply that the relief of suffering caused by others is not a good thing, since if it were a good thing, God would do it.

Then again, I doubt many theists think about having a cogent concept of God.