Today I've got two downvotes in 1-minute interval. One of them was on a banal answer to a today's banal question, and another one on a completely unrelated 1-week old non-banal first correct answer. Since before even a single downvote was pretty rare for me, these two were kind of unpleasant. There was no massive downvote, so it is unlikely that this will be detected by the system, and maybe the things will even continue in the next days.
I think I have no illusions about human behaviours and I can well live with that. I just wonder how more experienced users react in such situations.