The gnome-keyring SSH agent is disabled by default. If needed, there are
two ways to enable it.

System-wide:
  sudo gconftool-2 --direct --config-source=`gconftool-2 --get-default-source` \
  	--type bool --set /apps/gnome-keyring/daemon-components/ssh true

Per user:
  gconftool-2 --set --type bool /apps/gnome-keyring/daemon-components/ssh true
