PAM error on reboot of the RADIUS client

Question

I have a debian squeeze machine that acts as RADIUS client talking with the Freeradius server. I have configured PAM on the client, so made following changes.

1. Added radiusd to /etc/pam.d which contains -

   @include common-auth
   @include common-account
   @include common-password
   @include common-session
   

2. Added following line to /etc/pam.d/common_auth

   auth sufficient pam_radius_auth.so
   

3. Added following line to /etc/pam.d/common_account

   account required pam_radius_auth.so
   

4. Added following line to /etc/pam.d/common_session

   session required pam_radius_auth.so
   

5. Added server-ip and secret key to /etc/pam_radius_auth.conf

Authentication and accounting works fine after I configure the above on the client. As soon as I reboot client, login fails with error - "cannot make/remove an entry for the specified session". Cannot login into the client.

Maybe unrelated, but do I have to execute pam-auth-update. Before the login failure error, I see a message "cannot remove /usr/share/pam-configs/radius : No such file or directory"