It seems the source code for Half-life 2 has been making its rounds around the Internet lately.
The theft of part of its source code has delayed until April 2004 the launch of "Half Life II," the hotly anticipated alien-hunting game of Vivendi Universal Games, a company official said.
"A third of the source code was stolen," VU Games president of international operations Christophe Ramboz told daily Les Echos in its Tuesday edition. "It's serious because it forces us to delay the launch of the game by at least four months, that is to April 2004. Just the time to rewrite parts of the game."- Reuters
My feeling is they're using stolen source code as an excuse for the delay to April 2004. I can't understand why they would think they need to re-write things completely just to release the game. Granted, I haven't looked at the code to see what aspects of the game are in there, but I can't see why you'd need to re-write the whole thing.