Distribution/Version: Ubuntu Breezy

If you download a file (or, rather, open a file) and there is a registered mime
type association, Epiphany will offer the choice of opening the file with the
registered application or saving it.  However, if the selected application is
not the one the user desires, there is no convenient way to alter the association.

As a work around, you can save the file somewhere on your disk and right click
and associate it in Nautilus.  From a usability point of few, this operation
should be able to be performed from the open dialog itself (much like Mozilla's
dialog -- it has an "open with" option).

I'm willing to submit a patch, I would like to hear if the Epiphany developers
would accept it.