ssh-add </dev/null and SSH_ASKPASS

[Hatem Nassrat]

piping /dev/null to ssh-add, or running ssh-add not from a TTY causes
SSH_ASKPASS to be triggered on all OS and Desktops including
(K)Ubuntu.

Similarly under Ubuntu (Gnome) trying to ssh to a machine will pop-up
SSH_ASKPASS whether or not a valid TTY is present. This is not the
case with Kubuntu, how can I make Kubuntu be the same in that
respect...

Thanks,

-- 
Hatem Nassrat