Ugly: A forced update was released today with no other purpose but to add Steam encryption to TESV.exe.
This has caused the Large Address Awareness patch for the game (where you flip a Boolean flag in the EXE to allow the game to use the maximum amount of RAM it is capable of using, 4Gb in Skyrim's case, being a 32bit EXE). This LAA patch was alleviating a lot of stability problems for people and overall improving the game's performance because it was no longer hobbled by the 2Gb RAM limit. But now that Steam encryption has been added, making the LAA tweak will cause Steam to refuse to load the game.
Basically, this is Valve spitting in everyone's faces, as they have now proved to us that DRM takes precedence over a good gaming experience in their eyes.
EDIT: Since this update has arrived, a number of people have developed tools that allow for the LAA patch to be used through Steam. Essentially, it involves flipping the flag AFTER Steam has validated the EXE.
This could be considered the official version, as it was developed by the same person who made the LAA tool for Fallout: New Vegas.
This post has been edited by Thomas Kaira: Nov 22 2011, 05:57 AM