Updates to the Orange Box Engine have been released. The updates will be applied automatically when your Steam client is restarted. The specific changes include:
Orange Box Engine
* Updated the engine to report SteamIDs using the Steam_0 format instead of Steam_1
* Fixed problems in Half-Life 2: Episode Two, Portal, and Source mods running the current Orange Box engine
* Reverted the change that capped rate at 30000