How can I drag and drop email attachments in Mail on Lion? I use Mail.app on Lion with Classic View enabled so it works like it did in Snow Leopard.

When an email comes in with an attachment, I used to be able to select one or more attachments and drag them to my desktop.  In Lion, it looks like I have to click "Save" and then choose a location for the file.

How can I drag and drop email attachments in Lion?  

If the answer is I can't, then can someone explain why the change?  Having to click the "save" drop down, click an attachment, choose a directory in the pop-up, and then click the "save" button is much more work than drag-and-drop (and it feels decidedly Windows-esq, frankly).
I had this problem and tried restarting Finder in the Force Quit menu, and my drag/drop functionality came back.