SSH: permiso denegado (no se puede autenticar [email protected]) a través de CMD

Estoy en Windows XP. Me enfrento a un problema raro cuando intento conectarme a [email protected] utilizando bashssh -v [email protected] Puedo conectarme con éxito, pero cuando intento conectarme a través de cmd en la misma máquina, se me niega el permiso de mensaje.

En la depuración encontré que en caso de bash,ssh está comprobando la clave id_rsa pero en el caso de cmd, SSH solo está comprobando github_rsa. Ni siquiera tratando de comprobar id_rsa. A continuación se muestran los registros.

OpenSSH_4.6p1, OpenSSL 0.9.8e 23 Feb 2007
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: Applying options for *
debug1: Applying options for github.com
debug1: Connecting to github.com [204.232.175.90] port 22.
debug1: Connection established.
debug1: identity file /c/Documents and Settings/username/.ssh/github_rsa type 1
debug1: Remote protocol version 2.0, remote software version OpenSSH_5.5p1 Debia n-6+squeeze1+github12
debug1: match: OpenSSH_5.5p1 Debian-6+squeeze1+github12 pat OpenSSH*
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_4.6
Warning: Permanently added 'github.com,204.232.175.90' (RSA) to the list of known hosts.
debug1: ssh_rsa_verify: signature correct
debug1: Authentications that can continue: publickey
debug1: Next authentication method: publickey
debug1: Offering public key: /c/Documents and Settings/username/.ssh/github_rsa
debug1: Server accepts key: pkalg ssh-rsa blen 277
debug1: read PEM private key done: type RSA
debug1: Authentications that can continue: publickey
debug1: No more authentication methods to try.
Permission denied (publickey).

Por favor, sugiera cuál podría ser el posible caso. Algunos sugieren verificar los permisos de archivo en mi clave. Ambas claves tienen los mismos permisos de archivo, es decir,-rw-r - r--

A continuación se muestra el código actualizado después de hacer los cambios mencionados por @naomi

OpenSSH_4.6p1, OpenSSL 0.9.8e 23 Feb 2007
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: Applying options for *
debug1: Applying options for github.com
debug1: Connecting to github.com [204.232.175.90] port 22.
debug1: Connection established.
debug1: identity file /c/Documents and Settings/username/.ssh/github_rsa type 1
debug1: identity file /c/Documents and Settings/username/.ssh/id_rsa type 1
debug1: Remote protocol version 2.0, remote software version OpenSSH_5.5p1 Debian-6+squeeze1+github12
debug1: match: OpenSSH_5.5p1 Debian-6+squeeze1+github12 pat OpenSSH*
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_4.6
Warning: Permanently added 'github.com,204.232.175.90' (RSA) to the list of known hosts.
debug1: ssh_rsa_verify: signature correct
debug1: Authentications that can continue: publickey
debug1: Next authentication method: publickey
debug1: Offering public key: /c/Documents and Settings/username/.ssh/github_rsa
debug1: Server accepts key: pkalg ssh-rsa blen 277
debug1: read PEM private key done: type RSA
debug1: Authentications that can continue: publickey
debug1: Offering public key: /c/Documents and Settings/username/.ssh/id_rsa
debug1: Authentications that can continue: publickey
debug1: No more authentication methods to try.
Permission denied (publickey).

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