I played through Skyrim on my desktop and decided to give it a go on my little Toshiba L755D AMD Laptop.

It was running pretty smoothly through the opening, Ralof was giving his speech, yadda yada, then right when we get into town, the cart crashed into something, the horses yelled, the cart goes flying upside down, does a few rolls and then we landed into a pig pile against the walls of Helgen. Ralof and Hadvar are staring at me, I'm like, "WOAH!"

It was too funny... I thought I'd report it incase you give a flying horse **** about it!

you mean like this?
http://www.youtube.com/watch?v=t2nIipBAC5Y

Happened to me too. Pretty sure the fact that I killed the horse using the console had nothing to do with it though.

I also killed the guard who walks along the top of the Helgen Gate as you go through it, and the cart ended up crashing into a house. Guess he was the guard that gives the directions lol. Then I killed the horse and the cart went crazy.

That happend to me once...the cart went flying into the trees while they were still talking to the horse thief..hilarious scene..had to start again of course.

lol there was one video on youtube of this happening, but what made it freaking hilarious was the dialogue!

the cart crashed into the trees and wasnt moving,then the horse theif was like: "why are we stopping?"

and then the nord guy was like: "this is it.... end of the line"

and as soon as he said end of the line, the horse started doing back flips faster and faster and then it went super high

the timing of the dialogue and the horse just made it seem that they were going to be sent to space!