It seems in Leopard Mail, when you double click an attachment to open it, it is temporarily saved to ~/Library/Mail Downloads. This is in contrast to (I think) Tiger, where it would be saved to the Downloads folder set in the General preferences. There is still a setting for the Downloads folder in the General preferences, and according to the help window, it is to "Specify the folder in which to temporarily save attachments you open from a message". To me, that means the same as the Tiger behavior. However, if I change this preference to, say, "Desktop", it seems opening an attachment (not explicitly saving it) still saves it to the ~/Library/Mail Downloads folder, not the assigned folder. Is this the correct behavior? If so, the help window is misleading. Personally, I would like the option to change this folder, although I suppose there are workarounds such as changing the Mail Downloads folder to an alias of the desired destination folder.
Ok, so much for that clever workaround. Doesn't work, Mail just throws up an error and refuses to save the attachment. Any other ideas? I just want Mail to auto-save opened attachments onto the Desktop, in case I forget to explicitly save it, and so I don't have to root into subfolders to find it.