Bethesda has released a patch for Skyrim DLC pack Dawnguard which, amongst other things, eradicates a bug whereby NPCs appear with no clothes on. Stupid puritan developers.
It clocks in at 31 MB, and also addresses problems with unfinishable missions. We'll let you know when the full patch notes arrive. In the meantime, here's a picture of a semi-naked Spanish vampire.
Update: Oops, looks like the patch is specifically for the French, Italian, German and Spanish versions of Dawnguard. The English version has been deemed nudity-bug-free.