Version:           KMail
Version 1.12.90
Using KDE 4.3.68 (KDE 4.3.68 (KDE 4.4 >= 20090907)) (using Devel)
OS:                Linux
Installed from:    Compiled sources

Dragging and dropping an attachment from the message preview or a message viewer window, to a Dolphin or Konqueror file manager window, doesn't save the attachment as would be expected.  The only drop option presented is "Link Here" (along with "Cancel"), selecting this options creates a file named something like "attachment:3?place=body.desktop" with the contents:

[Desktop Entry]
Icon=unknown
Name=attachment:3?place=body
Type=Link
URL[$e]=attachment:3?place=body

The message

konqueror(12842)/libkonq KonqOperations::doDrop: URL: KUrl("attachment:5?place=body")

is printed on stderr.

Dragging the attachment from the message structure viewer correctly saves the attachment, the "Copy Here" drop operation is shown as would be expected.  The corresponding stderr message is

konqueror(12842)/libkonq KonqOperations::doDrop: URL: KUrl("file:///tmp/kde-jjm4/kmailu13052.6/leo.JPG")