SonicZ wrote mhmm.... here is what it does;

Clearing the cache on the Xbox 360 is a fairly simple process, and can be useful if the system seems sluggish, unresponsive, or you just need to get rid of a game update (for whatever reason).

The most important part of clearing the cache is knowing what to expect. All downloaded game updates will be removed. So if you have downloaded an auto-update for a game, in order to play it on Xbox Live you will need to re-download it.

User game saves, profiles, demos, videos, etc. are not deleted during the process.

Thank you so much!

You must be proud To have the awesome badge because your Truly awesome.

Just do all The Updates, it Doesnt Stop you From Going online LoLz.
8)

yes, when you clear your cache it makes you update, if you say no then there are no patches but you cant play online,

dude dont die about that, this happends:
You clear system cache and start cod 4 up it will ask you to update.
you press no and wont be able to play it online but you do the gpd mods.
The after your done you start cod 4 up again and then the updates comes up, you press yes and your online again.
Nothing wrong happends.
Test it out and you will see Im right

No, you can still go online.

I clear my cache about 20 times a day to stop myself from getting booted on halo3 so i can betray and not get booted