I've had my copy of Fallout New Vegas (Standard Disc Copy), which I bought every DLC for from the Playstation Store for awhile. I have noticed that when I am buying ammo crafting items (and the occasional Weapon and/or Weapon Mod) at the Gun Runners Store (Vendetron) the game crashes on me after accepting the transaction, which is preventing me from being able to continue with what I am working on. BTW, Ix have recently deleted all of the game data for the game (Std Game Files & DLC content). How can I keep this crash from happening?

Not to mention the game does lag from time to time, plus I have noticed the difference in Save File sizes between the DLC saves and the core game saves.

Don't know about the Gun Runners, but the save file sizes are just one of those weird things that happens on the Playstation. One of mine got to 1.5 GB!

The average save file for this game that I have is roughly 10MB.