A coworker came over to ask me about The Magazine Manager today at work. She was attempting to drag and drop some list items from one pane to another within the Webapp, but without any success. She's running in Internet Explorer on Windows 7 64-bit and Internet Explorer 9 32-bit.
I tried it on my machine with Internet Explorer 9 64-bit and I didn't have any problem dragging and dropping the items. I am also running IE9 on Windows 7.