I am trying to download OS X Mountain Lion from the App Store. The funds came out of my account after I clicked on BUY. I got the message to DOWNLOAD and clicked on it. The icon of the mountain lion moved from the page down to my tool bar the bottom of the page. The little download bar under the mountain lion never changed, even hours later. When I checked later under Purchases the message Pause was in the square on the far right and "Waiting...." was beside it. I cannot restart the download.