iTunes Store not functioning?

I'm completely up to date with iTunes software, so I don't know what the problem is.

Everytime I try to enter iTunes store, all I get is a half loaded bar and a blank iTunes Store screen. The bar will disappear as if I have finished loading, but the page stays blank. Ping does the same. But I can still access my iTunes account and change info.

This also seems to have an adverse affect, lagging everything as I stay on iTunes until I exit.