I\'m using GNU Emacs on my Ubuntu netbook in fullscreen mode. When I edit files that are under version control and hit C-x v v to commit the latest changes, an OpenSSH popup
While researching my main answer (above), I came across psvn for emacs. See this SO question/answer for more details: SVN for Emacs: how do you set author name and save password?
I thought you might also appreciate knowing about psvn, but I think the one about setting the PreferredAuthentications value on SSH is more directly applicable to the question you originally asked.