ssh private key password

[nodata <lsof nodata co uk>]

When I run ssh-add, a gnome dialog pops up asking me for the password to
my private ssh key.

I find this a little odd, since I am not running ssh to connect
anywhere.

I also find this a little disconcerting: I don't like giving my private
key's to programs that ask for it.

Is anyone else experiencing this?