problem with dropbear, pty??, and busybox

[Hans-Jürgen Koch]

I'm trying to use dropbear-0.49 on an ARM board (PXA270) running 
Linux 2.6.21.5.
I'm using busybox-1.6.0 (don't know if that's related).

The dropbear daemon starts without complaining. If I try to login with ssh
from an other computer, authentication (password) works, but then dropbear 
hangs and spits out this error:

failed to open any /dev/pty?? devices
no pty was allocated, couldn't execute

It's true, I don't have any /dev/pty devices. I used

./configure --disable-syslog --disable-openpty --disable-utmp --disable-utmpx

to avoid them.

I'm new to dropbear, can somebody tell me what this is all about and
what I should do?

Thanks,
Hans