ssh / telnet session are closed immediately (no replies)

Hi all,

I have problems loggin in to my pogoplug with debian installed. I can not start an interactive session (neither via ssh nor via telnet).

I have asked a question about this on the debian-users list already here where you can find the long story until now:
http://comments.gmane.org/gmane.linux.debian.user/454878

Quick summary: I still have no clue what is wrong.

Long summary:
Neither root nor an ordinary user can log into the pogo interactively. The problem occurs both on ssh and telnet, thus, I suspect the problem not to be an sshd misconfiguration.
What I can do is executing commands via ssh access (as in 'ssh root@192.168.2.109 bash' which gives me a crippled bash).

Latest guess was it is sth related to the (pseudo-)ttys.

I also followed the commit related to a similar error in geexbox:
http://www.geexbox.org/forum/topic/telnet-connection-closed-by-foreign-host/
and re-compiled a kernel with
CONFIG_LEGACY_PTYS=y
CONFIG_LEGACY_PTY_COUNT=16
but that did not help either.

So, my question is: Is this somehow known to anybody here? And is there anything I can do about this?

I can provide any file that might be of interest.

Any help on this is greatly appreciated.

Regards,
Andreas