There's bug in the latest CVS version of openssl s_server:

# openssl s_server -dtls1 -cipher PSK-RC4-SHA -psk abcd -accept 4443
Using default temp DH parameters
Using default temp ECDH parameters
ACCEPT
ERROR
17405:error:140B6044:SSL routines:SSL_GET_SERVER_SEND_CERT:internal
error:ssl_lib.c:1957:
17405:error:14109044:SSL
routinesTLS1_SEND_SERVER_CERTIFICATE:internal
error:d1_srvr.c:1116:
shutting down SSL
CONNECTION CLOSED
ACCEPT

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