I have a really annoying problem. I'm not sure at what point this started happening, but for some reason I cannot drag any file or shortcut from my desktop to any open Explorer window, but I can drag files and shortcuts from any Explorer window to any other Explorer window. All I see is the big "cancel" mouse cursor. I can also copy and paste or cut and paste without a problem. It's probably something in the registry, but I'm not sure I know where to look. Any ideas?