Yeah any idea what the 18mb update did?
Seems like all it did was add DRM to the game because it was just a .exe swap. The game wasn't using any even though it's steamworks, and I think valve made them change it because it's not allowed since they're using steamworks. I could be wrong but those were the details a few hours ago, I haven't checked for updates.
The patch is breaking the game for a lot of people though, especially ones using that memory fix from skyrimnexus.