I just went to a site I've shopped from previously. I placed my order. I clicked Checkout. I was taken to a page that listed my billing and shipping info (with an option to edit) and my order. But there was nothing on the page allowing me to continue to complete the order. I called the company. They checked things out and said there didn't appear to be any problem with the site and that somehow something must be blocking it. Does anyone know what could be causing this problem?

I have Windows Home Vista Premium, IE7, BitDefender Internet Security 2008.

most like cause is a popup blocker ,check tool and addons or the like .i don't use IE 7 or IE itself that much .but sounds like it could be popup blocker