Over on Half-Life News they've got some quotes from the guy who allegedly stole Half-Life 2 & its source code from Valve Software.
"To all those saying HL2 was delayed because of the hacking action, ill just remind you that what was leaked is what Valve has, nothing more & nothing less, so its pretty good to understand it wasnt finished yet. Also I'd like to point out the E3 [demo] was 1 big fake by Valve. Ever tried to kill that soldier in physicstown? Notice the door will still get kicked? No scripted sequences?
To everyone saying this is no Beta: I'd like to point out that THIS is what you wanted Valve to release on 9/30/03, theres no such thing as a much better release in Valves network!"
To Valve: I suggest you stop lying to your customers about how much was stolen/compromised, or I'll have to release everything just to prove my point. & you know what you got, as I do."
Would you like to know more? Planet Half-Life has a story up also which would seem to indicate that they did get a lot more code than originally claimed.