Apperantly a glitch at valve has resulted in that they put the entire script for HL2 in the pre-caching in steam Steam unencoded
www.halflife2.net

(BTW-Valve removed the script from the pre-cache if'n you go to download it off Steam now...but it's a case of locking the barn after the horse is gone.)

Thanks to EliteBastards
http://www.elitebastards.com/#news6262