Setting the filename of a PDF response

I'm working on a web page with a form which generates a PDF document in 
memory and returns it to the user. In the response header I have set

		Content-Type: application/pdf
		Content-Disposition: attachment; filename="foo.pdf"

However, Dillo seems to ignore the specified filename and instead uses 
the URL base name plus query string as the default filename in the 
download dialog window. Any suggestions?


-- August