I was almost certain that valve had discontinued CS:CZ, much like they had discontinued TF2. Believe it or not, valve is a company that produces a LOT of vaporware. If you look at valves official CS:CZ site, it still says that its due out on store shelves sometime during summer of 2003. Valves official TF2 site still says its due for release somewhere around winter of 2000. Both of these games were supposed to be in their final stages, just getting ready for release...yet neither has surfaced anywhere. You'd almost wonder if valve only intends to make money off of press releases boosting their stock value, and this whole stolen source thing was the result of a disgruntled software engineer who works at valve and is tired of this whole vaporware thing? And now valve is using this as a reason for why they are delaying the game further?
Well, its a long shot, but I am allowed to take wild guesses!

arty: