I never said it was. Valve realised the popularity of CS, and the fact that so many people were buying HL purely to get CS, so decied the next version will be launched under it's own name.
Half Life 2 will ship on it's own.
<font color=blue>"Look, I know it's old-fashioned, but I'm from the school that believes if God intended us to fly, he wouldn't have invented Spanish air traffic control" - Dave Lister</font color=blue>