I played close to 200 hours of SoC on the base version (no patches) with perhaps 1-2 crashes. 1.00005 SoC pretty much never crashes either, yet I can't get Oblivion with the patch to last more than 2 hours without a crash. What was that about rose tinted glasses?
Clear Sky, however.... that was buggy no matter what you did with it. Call of Pripyat was (aside from almost always crashing when changing zones, but reloading the game, and reloading the save fixed it and put you in the area you were trying to travel to) pretty much bug-free.