I think its a bug, i dont think theres anything you can do to stop it apart from pausing the download forever. If you uninstall it it will just start downloading again in a few days. I get the same for hl2 deathmatch and hl2 lost coast even though i dont want them! As for the nvidia card ttheres also an ATi version.
There are 10 types of people in the world: those that know binary, those that don't, and those that didn't expect this joke to be in base 3.
[video =373,150]http://a.pomf.se/ixefrf.webm[/video] Now shhhh Kaelan... OOOOOOH
pomf.se is ded. :'(