Well yeah. Yesterday, Half Life was running fine. No problems at all. Today tho, I started the game, loaded the savegame. And then, there was this sentence on the screen: "A.I. Disabled" with no enemy moving and stuff. Well okay, a google search led me to the console, where the code "ai_disable 0" does its job. Its Hella annoying, because that AI randomly occurs, mainly when I start the game or load a savegame, sometimes whitin level changes. Ok it's annoying, but fixable. The other thing that bugs me extremely is that HL2 crashes randomly. Sometimes after five minutes, sometimes afte longer. Mind you, it ran fine yesterday and I did not shut the pc down. Facts: 1) AI disables itself - can be fixed 2) Game crashes 3) Ran totally fine yesterday 4) No reboot or shut down have been done 5) It is a legit copy, bought via Steam 6) My overclock is stable (system specs not up to date, its lower now) 7) Temperatures of both GPUs do not exceed 70° C Anybody familiar with this problem and knows how to fix that for good?