Heartfire House Freeze Glitch

Now I've built all 3 houses in Hearthfire and I have moved into one, Lakeview Manor, with my wife and adopted kids.

But there is one problem, every time I add something to chests, wardrobes, drawers etc. the game freezes after a little while, and depending on how much I've put in I wont be able to go back into the house for a few days, maybe even a week, because it still freezes. The whole game, making me turn off my xbox.

It's fine if I don't put anything in, I can come and go as I please.

• Why does it do that?
• Is there a way to stop it doing that?
• Does anyone else have this same problem?

Or is it the task of simply putting up with it?

• Oh and I have giants, bandits and dragons attacking now and then, is that normal?

Not forgetting the dead dragon forever spawning at my house, half fallen through the ground, maybe that's causing a glitch?