Has anyone managed to use public key authentication with the dropbear daemon?
I've added the .ssh/authorized_keys file and it seems to work since the /tmp/syslog
file says

Mar 9 17:23:51 dropbear[5065]: pubkey auth succeeded for 'www' with key md5 98:d2:ca:b6:70:1e:56:bb:43:2c:a2:5f:fb:8a:dd:35 from ::ffff:

but the session dies immediately. "ssh -v www@router" tells me:

debug1: Authentication succeeded (publickey).
debug1: channel 0: new [client-session]
debug1: Entering interactive session.
debug1: Sending environment.
debug1: Sending env LANG =
Aiee, segfault! You should probably report this as a bug to the developer
debug1: channel 0: free: client-session, nchannels 1
Connection to router closed.
debug1: Transferred: stdin 0, stdout 0, stderr 30 bytes in 0.1 seconds
debug1: Bytes per second: stdin 0.0, stdout 0.0, stderr 532.3
debug1: Exit status -1

Has anyone seen that (and hopefully found a workaround)?
This is with yesterday's firmware but it was the same with older ones.