I really like FO3, I do, it's a great game and well scripted with great environments, a great escape from the tedious world. But I'd love to be able to play it without worrying about it crashing. I tried all the tips and patches and updates I could find, and they made no difference.
Sometimes I can play for a couple hours without crashes, sometimes it starts freezing or crashing within minutes of starting. I've discovered that the liklihood of early crashing is reduced if I reboot my computer before trying to play again. This is the first game I've ever had that is so freaking unbelievably unstable, I'm surprised it was even released like this, as if there was no beta testing or game testing AT ALL. Anything else I've had that didn't work properly was a one-item fix, such as upgrading the video driver, or a patch was almost instantly released by the company addressing the issue. Now I know two things to look for when buying a game so I don't pull my hair out: Never get a Steam Powered game, and never get a Bethesda game. Steam Powered because you never own the game; you cannot sell it to another person if you don't like it, and Bethesda because the bugs are so bad and the company is so slow (or unable) to offer a solution patch.
Anyway, not that anyone ever reads and responds to these specs, which are all well within the minimum requirements:
XP
AMD 4600 dual core
4gb ram
Nvidia 7950
Audigy 2 ZS
600gb and 150gb hard drives