iTunes Problem

Hi,

I use the shopping cart feature for the iTMS, and recently I have been having issues. When I add an iPod game to the cart, I cannot delete it. It will show that it is loading to delete it, but nothing happens. When I click on the "View" or the little arrows next to the name of the game, and window pops-up saying that "The item you've requested is currently not available in the US store." And it has said this for a few days now, so they aren't just updating the games section, and I am able to navigate to the game pages just fine and add more games to my cart so they must be available..

What could be causing this?

I use iTunes 7.5 on OS X Leopard 10.5.1