As you play, it caches the whole game. Over time, these issues will completely disappear. Do not install it, play it from the disc. Do not delete the cache. If you do, the game will have to start caching all over again.

At least thats what I get from the message.

How do you delete the cache anyway? Is there a button press method in this whilst it's loading up like there was for Oblivion & Fallout 3? Or do they mean delete the cache by using the stupid, overkill HDD maintenance tool which completely deletes everything including every single update for every game you have?

Hold the A button while turning the Xbox on.

Hold the A button whilst turning the Xbox on? Is that a new one? I haven't heard that one before. I know with Oblivion you had to hold the A button whilst it was loading up from the dashboard.

I have definately noticed improved textures the more I played before I even read this, so makes sense.