Just for reference:
I have installed the game onto my Xbox360, cleared the cache and it loads properly at my last save point with all DLC.
I have 2 allies with me currently - Boone and Rex (he's not yet repaired - still damaged and traveling in my party with me).
I am at level 20.
I've downloaded all of the DLC I can, including an update to the game (I believe this might have been the most recent patch, although it didn't call it such when it was downloading it).
Here's the glitch: I'm in the Mojave Wasteland desert, southeast of New Vegas, on that road that goes alongside Chance's Map location and stretches north and south. Anytime I get into a fight anywhere here, my Xbox freezes up. I suspect it has to do with Rex and/or Boone attacking (perhaps even their simultaneous attacking), because the screen freezes right as Rex reaches an enemy to attack & Boone fires a shot.
I've switched out weapons, outfits, you name it to make sure it wasn't some other freaky glitch interfering. None of that seems to affect the game - it's only when Rex and Boone attack. Since I rely heavily upon these two to take care of enemies for me, I need them in my party and don't want to dump them.
What can I do? I'm stuck!