How to make SVN+SSH remember password: http://jyotsna.philogy.com/2008/12/how-to-make-svn-remember-password/
http://jimmyg.org/blog/2007/subversion-over-svnssh-on-debian.html
More general ssh http://linuxproblem.org/art_9.html
If you are hosted at gandi check this also: http://groups.gandi.net/en/topic/gandi.en.hosting.expert/17567
