Well...I was able to play a little tonight. I loaded - just to try it - my Auto Save. I was in Gommorah and just left there. I didn't finish my job there, I just went back to Commander Moore and lied to her. Well she bought my story and sent me on another mission. I did notice something odd after it crashed tonight: everytime I crash I'm in a fight with several people, and I think I'm in VATS. That was happening in Gommorah and near Helios 1. I was shooting/VATSing and then the game would crash to the desktop. Oh well, back to the drawing board. I'm thinking of just uninstalling it and starting over. Hmmm.......
What gun were you using?
What gun were enemies using?
Crashing to desktop is kind of a common issue for Bethesda titles. Oblivion, FO3, New Vegas....I got into the habit of regularly hitting F5 (quicksave) for all of them. Still yours sounds very frequent. I've had maybe two crashes this past month, sounds like you've had 8 or so in a row.
Since when did the PS3 have trouble with open world games? I've never had problems of crashing in other open world games. Is there some official source?
Sorry, my own wording may have been off, though I'm sure the bigger the game, the more likely the issue: http://www.shacknews.com/article/71385/fallout-new-vegas-dev-talks-ps3-memory