problem with HostbasedAuthentication

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Hi,
I am trying to setup a hostbased passwrodless ssh from a client to a server using this guide http://www.ehow.com/how_7621307_set-up-hostbased-authentication.html.

The client looks like:

mahmood@client:~$ cat /etc/ssh/ssh_config  | grep "HostbasedAuthentication"
   HostbasedAuthentication yes 
mahmood@client:~$ cat /etc/ssh/ssh_config  | grep "EnableSSHKeysign"
   EnableSSHKeysign yes


and the server looks like:
mahmood@server:~$ cat /etc/ssh/sshd_config  | grep "HostbasedAuthentication"
HostbasedAuthentication yes 
mahmood@server:~$ cat /etc/ssh/sshd_config  | grep "IgnoreRhosts"
IgnoreRhosts no 

also the server has the key for client:

mahmood@server:~$ cat /etc/ssh/ssh_known_hosts 
client ssh-rsa AAAAB3Nz.....

the ~/.shosts file on the server contains:
mahmood@server:~$ cat .shosts 
client.domain mahmood

Then on both server and client, the ssh service is restarted:
mahmood@client:~$ sudo service ssh restart
ssh start/running, process 1355
mahmood@server:~$ sudo service ssh restart
ssh start/running, process 28982

How, when I run "ssh -vvv server" from client (to show the verbose messages), I still get the password prompt. 

mahmood@client:~$ ssh -vvv server
OpenSSH_5.3p1 Debian-3ubuntu6, OpenSSL 0.9.8k 25 Mar 2009
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: Applying options for *
debug2: ssh_connect: needpriv 0
debug1: Connecting to server [192.168.1.1] port 22.
debug1: Connection established.
debug1: identity file /home/mahmood/.ssh/identity type -1
debug1: identity file /home/mahmood/.ssh/id_rsa type -1
debug1: identity file /home/mahmood/.ssh/id_dsa type -1
debug1: Remote protocol version 2.0, remote software version OpenSSH_5.3p1 Debian-3ubuntu4
debug1: match: OpenSSH_5.3p1 Debian-3ubuntu4 pat OpenSSH*
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_5.3p1 Debian-3ubuntu6
debug2: fd 3 setting O_NONBLOCK
debug1: SSH2_MSG_KEXINIT sent
debug3: Wrote 792 bytes for a total of 831
debug1: SSH2_MSG_KEXINIT received
debug2: kex_parse_kexinit: diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1,diffie-hellman-
group1-sha1
debug2: kex_parse_kexinit: ssh-rsa,ssh-dss
debug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-
cbc,aes256-cbc,arcfour,rijndael-cbc@xxxxxxxxxxxxxx
debug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-
cbc,aes256-cbc,arcfour,rijndael-cbc@xxxxxxxxxxxxxx
debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,umac-64@xxxxxxxxxxx,hmac-ripemd160,hmac-ripemd160@xxxxxxxxxxx,hmac-sha1-96,hmac-
md5-96
debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,umac-64@xxxxxxxxxxx,hmac-ripemd160,hmac-ripemd160@xxxxxxxxxxx,hmac-sha1-96,hmac-
md5-96
debug2: kex_parse_kexinit: none,zlib@xxxxxxxxxxx,zlib
debug2: kex_parse_kexinit: none,zlib@xxxxxxxxxxx,zlib
debug2: kex_parse_kexinit: 
debug2: kex_parse_kexinit: 
debug2: kex_parse_kexinit: first_kex_follows 0 
debug2: kex_parse_kexinit: reserved 0 
debug2: kex_parse_kexinit: diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1,diffie-hellman-
group1-sha1
debug2: kex_parse_kexinit: ssh-rsa,ssh-dss
debug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-
cbc,aes256-cbc,arcfour,rijndael-cbc@xxxxxxxxxxxxxx
debug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-
cbc,aes256-cbc,arcfour,rijndael-cbc@xxxxxxxxxxxxxx
debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,umac-64@xxxxxxxxxxx,hmac-ripemd160,hmac-ripemd160@xxxxxxxxxxx,hmac-sha1-96,hmac-
md5-96
debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,umac-64@xxxxxxxxxxx,hmac-ripemd160,hmac-ripemd160@xxxxxxxxxxx,hmac-sha1-96,hmac-
md5-96
debug2: kex_parse_kexinit: none,zlib@xxxxxxxxxxx
debug2: kex_parse_kexinit: none,zlib@xxxxxxxxxxx
debug2: kex_parse_kexinit: 
debug2: kex_parse_kexinit: 
debug2: kex_parse_kexinit: first_kex_follows 0 
debug2: kex_parse_kexinit: reserved 0 
debug2: mac_setup: found hmac-md5
debug1: kex: server->client aes128-ctr hmac-md5 none
debug2: mac_setup: found hmac-md5
debug1: kex: client->server aes128-ctr hmac-md5 none
debug1: SSH2_MSG_KEX_DH_GEX_REQUEST(1024<1024<8192) sent
debug1: expecting SSH2_MSG_KEX_DH_GEX_GROUP
debug3: Wrote 24 bytes for a total of 855
debug2: dh_gen_key: priv key bits set: 124/256
debug2: bits set: 507/1024
debug1: SSH2_MSG_KEX_DH_GEX_INIT sent
debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY
debug3: Wrote 144 bytes for a total of 999
debug3: check_host_in_hostfile: filename /home/mahmood/.ssh/known_hosts
debug3: check_host_in_hostfile: match line 1
debug3: check_host_in_hostfile: filename /home/mahmood/.ssh/known_hosts
debug3: check_host_in_hostfile: match line 2
debug1: Host 'server' is known and matches the RSA host key.
debug1: Found key in /home/mahmood/.ssh/known_hosts:1
debug2: bits set: 503/1024
debug1: ssh_rsa_verify: signature correct
debug2: kex_derive_keys
debug2: set_newkeys: mode 1
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug3: Wrote 16 bytes for a total of 1015
debug2: set_newkeys: mode 0
debug1: SSH2_MSG_NEWKEYS received
debug1: SSH2_MSG_SERVICE_REQUEST sent
debug3: Wrote 48 bytes for a total of 1063
debug2: service_accept: ssh-userauth
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug2: key: /home/mahmood/.ssh/identity ((nil))
debug2: key: /home/mahmood/.ssh/id_rsa ((nil))
debug2: key: /home/mahmood/.ssh/id_dsa ((nil))
debug3: Wrote 64 bytes for a total of 1127
debug1: Authentications that can continue: publickey,password,hostbased
debug3: start over, passed a different list publickey,password,hostbased
debug3: preferred gssapi-keyex,gssapi-with-mic,gssapi,hostbased,publickey,keyboard-interactive,password
debug3: authmethod_lookup hostbased
debug3: remaining preferred: publickey,keyboard-interactive,password
debug3: authmethod_is_enabled hostbased
debug1: Next authentication method: hostbased
debug2: userauth_hostbased: chost client.
debug2: ssh_keysign called
debug3: ssh_msg_send: type 2
debug3: ssh_msg_recv entering
debug1: permanently_drop_suid: 1000
debug2: we sent a hostbased packet, wait for reply
debug3: Wrote 608 bytes for a total of 1735
debug1: Authentications that can continue: publickey,password,hostbased
debug2: userauth_hostbased: chost client.
debug2: ssh_keysign called
debug3: ssh_msg_send: type 2
debug3: ssh_msg_recv entering
debug1: permanently_drop_suid: 1000
debug2: we sent a hostbased packet, wait for reply
debug3: Wrote 672 bytes for a total of 2407
debug1: Authentications that can continue: publickey,password,hostbased
debug1: No more client hostkeys for hostbased authentication.
debug2: we did not send a packet, disable method
debug3: authmethod_lookup publickey
debug3: remaining preferred: keyboard-interactive,password
debug3: authmethod_is_enabled publickey
debug1: Next authentication method: publickey
debug1: Trying private key: /home/mahmood/.ssh/identity
debug3: no such identity: /home/mahmood/.ssh/identity
debug1: Trying private key: /home/mahmood/.ssh/id_rsa
debug3: no such identity: /home/mahmood/.ssh/id_rsa
debug1: Trying private key: /home/mahmood/.ssh/id_dsa
debug3: no such identity: /home/mahmood/.ssh/id_dsa
debug2: we did not send a packet, disable method
debug3: authmethod_lookup password
debug3: remaining preferred: ,password
debug3: authmethod_is_enabled password
debug1: Next authentication method: password
mahmood@server's password: 


Any idea about that?
 
// Naderan *Mahmood;




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