Why does sshd on fedora 5 reject public key exchange

Thanks in advance for any help

I am accessing a fedora 5 machine using public key authentication
but the authentication is rejected and a password is requested

I am currently using the default configuration for /etc/ssh/sshd_config

I have found this to work in the past.

Does anyone know what the problem is here. When I try and access the machine
using ssh in verbose mode I get the following output

$ ssh -v mike@xxxxxxxxxxxxxx
OpenSSH_3.9p1, OpenSSL 0.9.7e 25 Oct 2004
debug1: Reading configuration data /etc/ssh_config
debug1: Connecting to mynode.net.com [] port 22.
debug1: Connection established.
debug1: identity file /cygdrive/f/cygwin/home/cs1mkg/.ssh/identity type -1
debug1: identity file /cygdrive/f/cygwin/home/cs1mkg/.ssh/id_rsa type 1
debug1: identity file /cygdrive/f/cygwin/home/cs1mkg/.ssh/id_dsa type -1
debug1: Remote protocol version 1.99, remote software version OpenSSH_4.3
debug1: match: OpenSSH_4.3 pat OpenSSH*
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_3.9p1
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: server->client aes128-cbc hmac-md5 none
debug1: kex: client->server aes128-cbc hmac-md5 none
debug1: SSH2_MSG_KEX_DH_GEX_REQUEST(1024<1024<8192) sent
debug1: expecting SSH2_MSG_KEX_DH_GEX_GROUP
debug1: SSH2_MSG_KEX_DH_GEX_INIT sent
debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY
The authenticity of host 'mynode.net.com (' can't be estab
RSA key fingerprint is 85:36:ce:b1:bd:97:1d:2c:bc:0e:d1:c7:73:e8:39:f0.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added 'mynode.net.com,' (RSA) to the l
ist of known hosts.
debug1: ssh_rsa_verify: signature correct
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug1: SSH2_MSG_NEWKEYS received
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug1: Authentications that can continue: publickey,gssapi-with-mic,password
debug1: Next authentication method: publickey
debug1: Trying private key: /cygdrive/f/cygwin/home/cs1mkg/.ssh/identity
debug1: Offering public key: /cygdrive/f/cygwin/home/cs1mkg/.ssh/id_rsa
debug1: Authentications that can continue: publickey,gssapi-with-mic,password
debug1: Trying private key: /cygdrive/f/cygwin/home/cs1mkg/.ssh/id_dsa
debug1: Next authentication method: password
mike@xxxxxxxxxxxxxx's password:
debug1: Authentication succeeded (password).
debug1: channel 0: new [client-session]
debug1: Entering interactive session.
Last login: Tue Mar 20 09:35:59 2007 from iceberg.shef.ac.uk
[mike@felix ~]$