I just completely updated my iTouch so I can now download apps. I've downloaded quite a few, I have 2 pages filled. The last few I've downloaded though aren't loading. They're installed, but when I click on the icon, the screen goes black, then goes back to the menu. It only does this for the last 4 apps that I've downloaded...the earlier ones I've downloaded work perfectly fine... Does this mean that I have no more room?