I am unable to connect to the itunes store from my mac can anyone help?

I am unable to connect to the itunes store from my mac. I can log in and see my account details but that is all. i cant see any of the main pages etc and am unable to search as nothing is loading. I have downloaded the new itunes and the updates have all been successful. And i can connect from my iphone, its just my mac which doesnt work. has anyone else had this problem?