Yup this in my opinion is THE must buggy, glitch filled game on the 360.
I have 20 hours into this game and I cant think of a single other game that has this many problems. I loved Fallout 3 but I am finding New Vegas to be more frustrating than fun with all the problems that carried over from Fallout 3, and all the new problems.
Some of my issues.
-Froze 3 times
-Fell through map twice
-Gun glitch where the gun disappears then goes above your head, this happens all the time
-Pip boy very bright glitch, had to re-load a previous save to stop this
-Follower getting stuck in objects several times, had to reload previous save
-enemies sticking through the ground and cant be killed
-many more I cant remember