I think so, I have not played Half-Life 2 much but everytime I play Day of Defeat Source it checks for updates first and installs them.
Uhhhh.... I want explanations. what, who, where and why would be great things to know. Just bought hl2, and i am currently playing it.
Oh, I got it. Gmod is a, pack/engine/editor you can muck around with HL2 physics. looks like they put the kibosh on it. I had yet to check it out so I don't even know what I missed. *edit* Seems a patch is already floating around to get it running again minus the face editor.